Depending on the connection and the length of time you've been separated, the desire that comes from missing someone can range from moderate melancholy to sheer anguish. Missing your SO is a very natural emotion to being away from them. Even though they are not physically with you, you know they are still thinking about you and feeling sad too. If you're wondering how you should act upon seeing your love again, don't worry about what others think or say. Just go ahead and do what you have to feel better about yourself. People who have been separated for a long time sometimes feel like they need to let their partners know exactly how much they hurt them by leaving. However, this isn't necessary if you can call or write letters instead. The important thing is that you take the first step toward fixing things with your partner so they will want to see you again. The most effective way to deal with the pain of missing someone is by doing something active that makes you happy. Go out with friends, visit museums, attend shows - anything that will get your mind off of your lover and back into enjoying life again will help. So yes, it's normal to get angry when you miss someone. But only do so if it helps you come to terms with the fact that you two aren't together anymore.