Originally Posted by BullMcGiveny
As Cap 3 will have four leads, plus whatever villains, they might just not bother with Sharon much. Have Steve be celibate, or pair him with Natasha.
Admittedly, this is all academic as we haven't seen the movie yet. But the writing's on the wall.
It seems that you're assuming that Cap 3 will return everyone (Cap, BW, Bucky, Falcon) from TWS by that statement. Who's to say that Cap 3 will feature all of them again? It's certainly possible, but there's been no indication that the Cap franchise has to include BW for future installments. And since there will be an Avengers movie in between, that may have ramifications for Cap's supporting cast as well.
I just don't think it's a given to assume that it's going to feature all the same players. And really, that's the beauty of this shared universe... we've already seen BW in Iron Man 2, so there's nothing that explicitly ties her to Cap's franchise.