<human>: Can you succinctly summarize the text in 1-3 sentences?

So I'm really into this friend of mine I'll call Josh [21/M], we'd hung out a few times before this semester with some mutual friends but in January or so we realized we had a class together and hit it off really well. We talk almost every day and hang out constantly, and we get along really well. I'm really into him, and I want to ask him out.

The thing is that I'm not...particularly attractive, and I don't say that in some self-effacing way, it's just true, and he is very much conventionally attractive. What I'm mainly worried about is that he's been so flirty because he couldn't even imagine me in a sexual/romantic way, if that makes sense?

I'm fully prepared for the possibility that he'll reject me, but I'm worried that he'll be weirded out and want to end our friendship or something of the sort.
<bot>: if your female friend who you don't find attractive made a move & you weren't interested, would you be embarrassed/whatever enough to end the friendship?