Meet Vaxy the pine marten. He's a graduate student at sunny Hoffridge U., where he helps Dr. Forrest with teaching, lab work, and getting his pants off whenever things are slow.
Meet Mike the rabbit. He's Vaxy's roommate and not-boyfriend, and he certainly wouldn't have any reason to be jealous of Vaxy sleeping with someone else. If he found out.
Meet Grace the fennec. He's a student, a friend of Vaxy and Mike who holds the firm belief that sex is just sex and shouldn't be mistaken for a relationship.
Yes, it's just another semester at "Hot Fudge U.," where the sex is as hot and easy as a day at the beach. Vaxy and his friends have most of another year to go before they have to worry about that "real world" thing they've heard about.
Now meet Mrs. Forrest. She's Dr. Forrest's wife.