Frankly (coming in late), is doesn't sound like there's much story there, so the chances of finding it in another story is unlikely. It might be an interesting dynamic, but there's simply no inner conflict to drive a story. More than anything else, it sounds like a romance on the road to disaster.
One alternative, though (for new stories, perhaps) is using a slight twist, where the woman who can only have sex with her boyfriend when drinking, is also not particular who she sleeps with once she is. Now that has plenty of conflict to drive any number of stories, especially as complications arise. It wouldn't even require any blackmail, coercion, D/S or pregnancy scares.