So I am hearing rumors they fixed this, I didn't see it spelled out in the patch notes. I really hope they didn't fix it, I don't see it really harming the game. Heck it takes a long time to save the galaxy why not have two wives, or at least give you a quest line that lets you switch in the next expansion.
Because, in game, Vette makes it very clear she wants nothing to do w/ you for wanting two wives, or even for choosing Jaesa over her.
I don't want BioWare to change that, given that it clearly states Vette's opinion on the matter in game. I'm not sure how you apparently are married to both, but I hope the issue is fixed myself, personally, if it is a bug.