<human>: Can you provide a brief overview of the text?

I've had sex but never a relationship, and in my head I blamed it on the guy but maybe it was my fault for never demanding that they get to know me first before I slept with them.

For a while I've been lonely and I haven't been able to improve my confidence enough. And I guess I used sex as a means to have someone in my life, even if they didn't care about me.

But now I want to stop. Focus on friends. If a boyfriend happens in the future, fine. But now I don't even know how it's supposed to work/how to stop giving the wrong signals to guys that I meet. I want guys who meet me to understand that I'm not just trying to hook up.

And I have a guy in my life I need to confront or maybe cut off. I told him I really liked him and he told me he didn't want a relationship, and now he's trying to weasel his way back into my life as a fwb (which I don't want). Problem is...I really like his friendship and don't want to lose it, but I also don't want to be used anymore.
<bot>: How do I stop letting guys use me? How do you get people to want you as a gf and not just a fwb? How do I keep a friend who just wants to sleep with me?