The recurring problem is that I find a girl attractive, just cute enough. We talk. Things move ahead. And then when I get the feeling that it's in the bag, it's like, "ok I got her. Now what." She gives herself to me and then i start nit picking at tiny problems i find with her for eg shes too clingy or she laughs too loud or she gets too inquisitive about me. Eventually ill start to distance myself from the girl and this cycle just repeats every time i sense that she gets interested in me, ive missed out on a lot of lays because of it and id really like any tips/advice to help me overcome it please and thank you.

Tl;DR Once I get a girl, she feels unattractive to me and its destroying my female relationships.