I take issue with is couples’ continual appearance in lesbians’ spaces, or the space of anyone who has not clearly specified in their settings that we are looking for this type of relationship — I was 20 and sipping a margarita while watching the moonlit water of Lake Tahoe gently lap gently against the shore the first time I received a threesome request That weekend, a girl friend and I were visiting another friend at his cabin in Kings Beach, a funky and picturesque…