In my situation, I'm not sure if he's dating someone, so that may be the reason, but I'm not really sure.
Lots of great input, but think about it in terms of you only knowing the bare bones. This person only knows you by what you look like, nothing more. But the catch is that attraction is not the problem, so you know the person is attracted to yo, but they aren't making an effort to learn more. They are not being very responsive.
When or if a guy realizes that the juice is not worth the squeeze, he becomes a pure window shopper... when he knows that getting involved with you will bring more problems than benefit... less freedom... more drama... more expense.
To sum it up, maybe he did a cost benefit analysis... it's just not worth it... whats in it for him...
*Doesn't like pets *Abuses drugs/does hardcore drugs *Eats junk food 24/7 *Doesn't workout [or even try to] *Narcissistic *Passive or passive aggressive *low sex drive *Wants an open relationship *Wants to include other people in our sexual lives *flirts with other women