I am a 22 year old girl who's about to graduate college, but I've never had a real relationship since guys only ever seem to be interested in hooking up with me, not actually dating me, and I don't know why that is. I'm physically attractive enough, I have varied interests and hobbies, I can hold my own when it comes to witty banter or deep conversation, and I'm an all around loving/affectionate person. I can be a bit on the shy side, and insecure at times, but everybody has insecurities sometimes. The thing is that I'll be seeing a guy for a few months, and whenever I bring up the idea of taking the relationship to the next level, he'll say something like "I'm not looking for anything serious right now." And then about a month later he'll end it and start a relationship with the next girl he meets. I have no idea what it is I'm doing wrong; whether it's because the guys I date aren't right for me, or if I'm somehow fundamentally defective. Which is it?