When someone "curves" you, they continue to respond, but they avoid any inquiries about commitment or attempts to define your relationship. They are telling you that they're having fun with you and don't want anything serious. If you ask them directly if the teasing is for real, they will usually say yes. But beware of weasely "no's" that come after a lot of pressure from you. If they can walk away without hurting your feelings, then they're trying to be nice by leaving you confused. The only way to really know if someone is teasing you is if they tell you outright. But if they do, just remember that it's not meant to be taken seriously and they probably have people who don't tease them too who can tell you more about it. Teasing is used as a means of entertainment by some people. Whether they intend to make you feel uncomfortable is another matter entirely. Just keep in mind that when someone curves you, they aren't necessarily trying to hurt your feelings.