I wanna know will Blair and Chuck together at the end of the season 2?

Uhm, I'm not sure what you're asking because your actual soalan & your komen are 2 different questions...

1. Season 2 isn't over yet, so they don't sell them yet. Normally anda can watch them in the video section on fanpop, atau anda can find them on youknowyouloveme.org
2. Since S2 isn't over, we aren't for sure whether CB will end up together, but with some of the spoilers we've seen, I think they will.

If anda want to know the spoilers, let me know, and I'll point anda in the right direction.

anda can watch it on wwww.tvduck.com
and we don't know about chuck and blair because the seaosn hasn't ended yet, like Shandii already berkata (:

most likely i mean the do Cinta each other