Dragon Age was also in development long before EA acquired them.
Also, in Jade Empire they had het, gay, and polygamous romances (alright, with two girls only, but still). We have only seen a return of gay romances post-DA2, and no return of non-monogamous relationships (other than a tease in ME1).
And, as I pointed out, Juhani's romance was gutted on LucasArts orders.
Also, all BioWare romances are black-outs. That really isn't the point.