There is nothing wrong with a Gay/Lesbian relationship in games, but I can see your concerns, as thatbennyguy said above, as long as you don't start objectifying women, and just adding lots of random "softcore" that has no link the story and it has been placed in their obviously. Then it can cut away from the story and feel slightly more like a softcore porno that you'd see late at night
but from the way you are portraying it, you seem to have a good balance. so don't worry about it.