<human>: Summarize the given text in a few sentences.

I [19F] recently started seeing this guy [20M] who I met in high school but hadn't seen in over two years. We re-met, hit it off and exchanged numbers. He called me for a date the next day and it went great. A couple days later he invited me out again. He was sweet, funny, planned great dates and he really turned me on (we didn't do anything sexual besides make out, but I felt serious chemistry). 

On the second date, he brought up the fact that he had "bad luck with girls". I tried to seem sympathetic, which caused him to launch into a story about meeting a girl at a party, kissing her and being later rejected by her. He said that he tends to crush quickly on girls who listen to him and they often don't reciprocate feelings (I inferred that they reciprocate sexual advances). He was also overweight in high school and said that after he got fit he enjoyed the attention he got from girls and went through a "manwhore" phase. It was a weird conversation and thankfully it didn't last long. We fooled around a bit afterwards and he said that he was "trying not to jump the gun and remember it was just a second date" and said he had habit of rushing things. I said I don't move quite that fast and he didn't try anything with me besides kissing and a bit of fondling.

THIS conversation, though, is ruining my attraction to him! He said he's interested, he texts me every night to ask about my day, he's got another date planned for this week...but I'm having trouble seeing him as having relationship potential. He portrayed himself as kind of desperate, which made me feel bad about myself because it seems like there's no reason he chose me or was attracted to me in particular- I was just available. It sounded like he gets (or convinces himself that he has) feelings for pretty much anyone that pays him any attention. Is he just insecure and awkward, or should I run for the hills?
<bot>: I'm seeing a guy who brought up his past experiences with girls and it's making me question whether I should keep dating him. I really like him but this conversation concerned me. Advice?