<human>: Could you distill the essence of the text into 1-3 sentences?

Recently a 16 [F] (we'll call her Isabelle) asked if I could be her boyfriend. I didn't really know her but we have been chatting a lot over Facebook and are good friends now. 

I have recently been second-guessing myself and wondering if I am actually attracted to her or if the only reason I'm in this relationship is because I didn't want to disappoint her. It's not that I didn't like her, it's just that I wasn't looking for a serious relationship when she asked me out, but I said yes. 

Does anyone have any advice? She is a really nice person but I'm not sure if I'm actually attracted to her.
<bot>: 16 [F] asked me out when I wasn't looking for a relationship but I said yes anyway. I'm not sure if I'm attracted to her, and am currently second-guessing myself.