What should I do about this woman who has a major crush on me, but is a bit weird?

Back in high school, there was a girl who acted very strangely. Like pretended to be a witch and pretended to have done all this voodoo crap and everything. She was not very pretty either, I mean you have the very attractive, moderately attractive, not very attractive, and flat out ugly.. anyway I would put her around the not very attractive area. Still though I was friendly to her, and sat with her at lunch and talked to her and everything. She acted like someone I thought would turn out to be a or something. Anyway, after highschool apparently she moved past that whole "weird" phase and is interested in relationships and everything. To put it lightly, she absolutely idolizes me. I mean, I would put it pretty close to being obsessed. A few months ago she asked me to come over and play video games with her and her brother. We played random crap, then when i went to leave... (the moments I always know are coming) she wanted me to kiss her. So I did. I dunno it was alright, but at the time I really didnt want her to keep trying to increase her feelings for me because I didnt really just wanted to be friends. She always wants me to go with her places like some youth group thing or bowling or game night or whatever. I always say maybe, and then end up not going because I am afraid she will think its because I want to be more than friends. Ok in conclusion... despite her being weird and not really the attractive level I want my gf to have (i mean im not too picky but i do have a line at one point) she has the obsessive quality ive always wanted someone to have about me. I asked my great uncle and he told me not to deal with women who are that weird. I started to think I wanted time to myself, but I cant stand being alone! I am sooo bored! I have had really cute girls tell me I am cute, but when they "get to know me" they show no interest. Sorry this has been so long, but I always try to be detailed to get the best answer I can get. I am turning 21 next august and I really thought by that point I would be living with a girlfriend at that point, but so far I havent fallen in love =/ All of my friends from high school and people in my cl are having kids, getting married, and despite being able to get girlfriends, I really havent even come close to finding that girl I could spend my life with. Is this girl worth giving a chance you think? Or should I just keep being single and have an open field?