Keeping me warm

So I always have been and always will be just for my man, but i keep getting this fantasy where were going at it like animals while his friend is just over hanging out and I'm tied up and bent over, and he cums in me and has to take a break. While he's taking a break though, he tells his friend to have his fun with me to "keep me warm" until he's ready for more. So my boyfriend sits on the couch or something leaving me to the mercy of his friend until he's got his energy back, and then they just swap out again, and it's been driving me absolutely crazy.