So we're going to be hanging out with John's friends a lot more....

[psteve]

Wow. Way to help out the situation... and be mature at the same time.
Maybe that's what YOU would be thinking, but some men have a bit more class than that.
I'm not impressed.

While I agree that this line of thinking is unimpressive, there is a point to be taken.
Most men are more likely to be thinking that Reb is 'hot', than that she's 'fat'. I know of very few men who would consider Reb unattractive in any way.
And while she is concerned about appearing unsociable, they probably won't even notice her apprehension.