I confess I was in two minds at having a fat girlfriend at first, but she has a fat friend who's bi but only fucked other women, and was curious to try cock.
Both are fat, but even if they are, most guys will never have two women sucking their cock at the same time, so whatever!
I now share an apartment with the two girls, and my fantasy has always been to have the night start off with two girls sucking my cock, then taking turns riding it.
I also have convinced them to try anal. Only my gf's friend has agreed to do it so far, and now I'm paying more attention to her, and my gf is now striving to compete.
Feels good man.