If I was the guy (I wish) they were fighting over the loser would need to carry the winner, piggyback style, anytime I want to see it. For a week.
I'd sit in a chair and call the loser (Jen in my case) to stand in front of me, and tell me what a bitch the winner (Rachel) is. I'd tell her I'm gutted that she lost, as it was her that I really wanted. I'd get the winner to stand behind the loser, so she can hear it all, then get really angry and jealous.
Then in one quick movement I'd have the winner jump on the back of the loser, wrap her legs around the loser's waist, clamp her booted legs together and crush the waist of the loser. The winner would use the loser's hair like reigns, as if she's riding, or more like breaking-in, a wild horse.
If the loser can't take this and her legs buckle so that she ends up on the ground with the winner on top of her, I'd get the winner to pull the loser up on her feet again, by the hair, and mount her once again.
Then once she's suitably exhausted I'd have the loser drain me dry again. That should make the winner even more jealous!!!