One reason legs get sore is because of overuse and swelling. Raising your feet while relaxing at home will help to negate gravity and allow blood and lymph fluid to exit the lower legs and return into circulation. Taking your socks / nylons off will also help to reduce swelling, thus soothing them even further. Raising your legs at or above your heart level is good for promoting circulation. Use soft pillows to elevate your legs while laying on the sofa, but don't hamper blood flow by crossing your legs or ankles. Soaking your legs in a warm Epsom salt bath can significantly reduce pain and swelling, especially if the pain is caused by muscle tension. The magnesium in the salt helps muscles relax. Don't make the water too hot (to prevent scalding), but make it as warm as is tolerable the warmer the water, the more effective the Epsom. Don't soak in the bath for much more than 30 minutes because salty water pulls fluid from your body and may dehydrate you. If swelling is a particular problem in your legs, then follow the warm salt bath with an ice bath until your legs start to feel numb (about 15 minutes or so). Always remember to dry your feet thoroughly after a bath so as to prevent slip and falls. If you're walking long distances, maybe the stress in your legs is due to muscle strain. Mild muscle strains respond well to some light stretching because it relieves muscle tension and promotes blood flow. The three main muscles groups to focus on are your calves, quadriceps, and hamstrings. In general, hold stretches (without bouncing) for about 30 seconds. Do these three to five times daily, until the discomfort in your legs decreases. For a quad stretch while standing, brace yourself against a wall, flex your knee, and try to pull your foot such that your heel touches your buttocks. For a hamstring stretch while standing, bend over at the waist and try to touch your toes. Warming up and stretching your leg muscles prior to walking or any athletic activity may help prevent injuries such as strains, sprains, and muscle cramps. Non-steroidal anti-inflammatories (NSAIDs) such as ibuprofen or aspirin are short-term solutions to help you deal with tension, pain or inflammation in your legs. Keep in mind that these medications can be hard on your stomach, kidneys and liver, so it's best not to use them for more than two weeks on a constant basis. Dosage for adults is usually 200400 mg, by mouth, every four to six hours. Alternatively, you can try over-the-counter analgesics such as acetaminophen (Tylenol) to soothe your legs, but never take them along with NSAIDs. Be careful not to take medications on an empty stomach, as they can increase the risk of ulcers. Ill-fitting and/or excessively heavy shoes also contribute to tired and sore legs. As such, wear stable, lightweight footwear that suits your job, sport or activity. Aim for no more than a 12 inch (1.3cm) heel. High heels crowd the toes and create more tension in the calf muscles and Achilles tendons. If you're a serious runner, replace your shoes every 350500 miles (560800km) or three months, whichever comes first. Remember to always tie your shoes tightly, because loose shoes or flip-flops puts more strain on your lower leg muscles. Minor leg injuries such as shin splints are often caused by walking (or running) uphill, on uneven terrain or on hard surfaces such as asphalt or concrete. As such, alter your course and change the type of surface you walk on switch to grass or dirt, for example. Weight loss helps prevent a variety of musculoskeletal problems as there's less pressure put on the bones and muscles of the feet and lower legs. For most women, consuming less than 2,000 calories daily will lead to some weight loss every week even if you're only a light exerciser. Most men will lose weight at under 2,200 calories daily. Switch to lean meats and fish, whole grains, fresh produce and lots of water for the best weight loss results. Many overweight people have flat feet and tend to over-pronate their ankles, so choosing shoes with excellent arch support is crucial.
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One-sentence summary -- Elevate your legs while resting. Consider an Epsom salt bath. Do some leg stretches. Take medications. Change your shoes. Lose weight.

No matter what you are telling her, make sure you say it with a smile. Also show her that you are comfortable in your own skin and are teasing because you like her. Otherwise, she might think you are serious and take whatever you say as an insult, especially if you look withdrawn and sullen. Just try to be as comfortable as possible, even if you like her a great deal. She will catch on to your mood and be less likely to take offense. Notice the things she does while you are around her. Then, make a sly comment about how she does a certain thing. For example, if she tosses her hair when she laughs, say something like: "Watch out where you throw that, you're gonna put my eye out!" Not only will she laugh, she'll know that you've been watching her and notice things about her. Be open to letting her tease you back. Try to leave your comments open for her to tease you about something similar. This way, it will be a back and forth instead of assault from you. Make sure it doesn't come out as insulting. The idea is to make her smile and laugh. A good way to tease her that has the added bonus of bringing you in to contact with her is by doing some physical teasing, such as playing keep away. This is especially effective if you pair it with doing something nice for her. Think about buying her a present, like tickets to a concert she wants to go to. Offer the tickets to her, then pull it away. Each time you do this, bring her a little closer to you. This is playful and a good way to tease her, but you end up doing something nice for her as well. You can also tickle or poke her teasingly, trying to get a reaction out of her. If she responds, you can amp it up a little. Although teasing usually incorporates some kind of jibe at the girl, try to give it a positive spin. If she keeps stumbling over her words, instead of insulting her ability to talk, ask her something like: "What's with all the stumbled words? Are you trying to confuse me and throw me off your trail?" This implies that she is purposefully stumbling over her words in order to mess with you instead of making fun of her for making a mistake. It is a playful way to draw attention to it while not being a jerk about it. This can also work with her physical appearance. If she is wearing a particularly high pair of heels, make some comment like: "Well, at least I know we're safe if we get mugged. You could stab them with those heels." It points out that you noticed what she's wearing but gently teases her about their height. It teases her subtly without critiquing her appearance. As you are spending time together, take notice of something about her, like how much she laughs or the kind of movies she likes. Based on your observations, give you a nickname. You can say something like: "I see you're really into Star Wars. I guess I should start calling you Jedi Jane." If you make it playful and fun, she'll be more likely to play along.
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One-sentence summary --
Be friendly and confident. Joke about her habits. Incorporate physical teasing. Make the teasing positive. Give her a nickname.