<human>: So I've been casually dating and having sex with this guy, let's call him Seth. Seth is great, he's hilarious, we have so much in common, we talk for hours about everything and nothing, and I genuinely feel so happy and comfortable around him. He's the kind of guy I would fall in love with in a heartbeat, and to an extent I think I already have. There's only one problem: I'm not physically attracted to him. 

I've never considered looks that important before. In all my past relationships I'd only started finding them attractive after I got to know their personality, and then it was more like I enjoyed their physical features because they belonged to them, and not because I was really objectively attracted to those features individually. 

So I thought it'd be the same with Seth, but I've tried so hard and he's just not physically attractive to me. This sounds awful, but he has a smaller build, and I've always dated guys who are larger than me. Physical intimacy is hard with Seth because I'm always afraid I'm going to crush him, and I'm 5ft and 90lbs. He's really skinny and has a tiny, tiny waist and I think I might even be broader than he is, which makes spooning kind of awkward. So whilst every other thing about dating Seth is great, I just don't get that level of physical comfort from a good cuddle that I'm used to, and physical intimacy is really important to me. (I have quite a low sex drive and I don't really care for it myself - I prefer to focus on my partner and make sure they're enjoying it - but cuddling and spooning are very important to me.)

This really sucks, because I really, really like him, but he deserves someone who thinks he's the sexiest person in the world, y'know? I feel like it wouldn't be fair for me to date his personality when I'm not into his body at all. Has anyone else been in this position? I think I should probably break it off as soon as possible, otherwise it would be selfish. Thoughts?

Give me the gist of the text in a nutshell
<bot>: Not physically attracted to a guy I'm seeing, should I just leave as soon as possible? Or should I stick it out and hope for the best?