I actually give Kurt a pass on finding a black guy for Mercedes only because of Blaine. I think that finding another gay student that he can really confide in has been so great for him that he'd assume it would go the same way for Mercedes. In any other character (except maybe Puck because he made such a big deal about dating a Jewish girl) I'd find it offensive but not here.

The whole 'eating your pain' storyline was pretty offensive, though - just because she's chubby she overeats? WTF is Glee trying to say with that? That everyone who's overweight is just eating their pain? It's what made that respect speech such bullshit because it's not something Mercedes has really had a problem with in the past - the sort of made it up for this episode. :p