He is sexually interested in you and appears to be looking for a short-term relationship. When boys are sexually intrigued or wish to indulge in one-night affairs, they will frequently complement the lady sexually: "great figure, wonderful hips, nice legs, etc." They are seeking out opportunities to explore sexual matters with women. Boys will sometimes say things like this as a way of getting attention from girls. It's a common tactic in high school and college years when people are more concerned about fitting in and having fun than with being honest or true to themselves. For example, if someone likes your shoes, they might say it to get your attention. Then after you look at them, they'll probably take them off and throw them on the ground in disgust. This shows that they're not really into you; they're just trying to get rid of her shoes so they can go back to being alone. Boys will also tell you you've got a great body even if you don't feel like it. For example, if you're wearing a bikini, he may comment on your physique. He's giving you positive feedback on something you worked hard on — your appearance. Of course, saying you've got a great body could also be a way for a boy to be rude or act like a jerk.