|Yes I have seen a few.
One I can recall has some pretty good great sucking (maybe season 1?). One of them comes into the bedroom and in a sort of sultry way approaches the bed. Then she gets in bed next to the blond one and begins to kiss her and suck her breasts.
I'm not sure which season, but there is another scene I remember where one is nursing their baby and you can tell that the other woman is turned on my seeing the nursing - I think (but am not sure) - that results in them having sex right after.
Those are the only ones I can recall.