<human>: So, a little back-story on me: I'm a twenty-two year old guy that has never really dated before. I've been on dates, but nothing has gone further - I've never really been in a romantic relationship before and have preferred to stay friends with people (weird, I know; I'm the friendzoner it seems) since it's easier and more natural, and truth be told I like to be myself and spend my time alone and generally just have that free time to pursue my own interests. Well for the last few weeks I've been seeing a girl, eighteen, and she's a little on the thicker side... but that's not a problem with me at all. She's funny, pretty, and a blast to be around... and she really, really digs me. Hard. She's just so easy to be around and BS with and I really do like her, but I just don't know if I'm sexually attracted to her. I can BS with her, laugh, go to games, play games with her, and be completely honest with her and vice versa. She's one of the best friends I've ever had if I'm being honest since I met her in the summer of last year (She was already eighteen by then, no worries there!), and since the six or so dates we've been on they've been fun; laughing, bullshitting, touching, kissing... but I just don't know if I feel that way about her, and I'm apprehensive of going further with the relationship. I rationalize to myself that if I do go further and there's no stronger chemistry then it's no big deal, but I just don't want to end up hurting her and ruining a great friendship. This is kind of foreign water for me, so if anyone has some advice that would be absolutely fantastic!

Can you summarize the given text in a few sentences?
<bot>: I don't know if I am actually sexually/physically attracted to this amazing human being, and if I'm not then how can I salvage a wonderful friendship if I break the bad news?