<human>: I'm 23 years old and a nurse. I've been an nurse for a year now in a graduate nurse program. In college I had the attention of guys a lot, but not as much as my friends. We'd go out and I'd get numbers and have sex with a few but they'd turn into friends with benefit type situations and after a while it was frustrating.

Now I see many of my friends from work or college get into relationships, engaged, etc, all the time on facebook. Yet I just met someone new and we've been having sex regularly, and he's told me he's not seeing anyone else but doesn't want a relationship. This has happened with the past three guys I've been with.

I don't understand what's wrong with me. Guys tell me I'm beautiful, cute, smart, sexy (but never hot), they love hanging out with me but when I start to get feelings after a few months or so they say they don't want to date me. It's not me, it's just "they don't want to be committed/be responsible for someone else's feelings." 

I'm not overly clingy or jealous to them. I don't understand what I'm doing wrong or if I'm attracting the wrong kind of guy. Help!

Condense the text into a few key points
<bot>: Nearly every guy I've been with has just wanted a FWB  type situation. I don't understand why this keeps happening to me!