I have no problems approaching people or starting conversations and I have gotten over my AA. My problem is that I can't close with any girl i meet or talk to. I can continue a conversation for ages its the entire ending part that confuses/screws me. It gets to a point where it's really awkward for both of us and I have no idea what to say to close. It's starting to piss me off and it's been bothering me for ages now. Any advice is appreciated.

also, I'm in college if that helps at all