Prince Gumball and Marshall Lee Abadeer are best friends. Really close. Close enough to not rat out the other after killing someone. They've been together since they were little. They only talk to each other. Refuse to make other friends. Both don't have a family. They aren't seen away from each other. Not even for a second. Where one is, you'll see the other. School, store, park, anywhere. Teachers are getting tired of Prince Gumball being around such a "bad influence" and decide to split them up for a project. How far will this go before the teachers realize these two won't split?

Yaoi, smut and (loads of) LEMON Alert!!! After meeting the mysterious boy from a rival school (and having quite the, er... Introduction) he finds himself in a "fuck buddy" relationship with him. But he's fine with this, it is very pleasurable--regardless of what his brain tries to tell him. But then Marshall gets serious, as in... He wants Gumball--as a real boyfriend! Once he is taken to Marshall's house for the first time he tells Gumball: "If you agree to going all the way, you're agreeing to doing this with just me." At first he is confused as their sessions never went so far as to completely taking his virginity, so all he can say is: "A-As in become exclusive?" And he is even more surprised when the vampire says yes. He should be happy about this and yet... He feels so much trepidation. Regardless, he puts his brain on mute once more and agrees. He goes "all the way" with him and becomes Marshall's newest boyfriend. But no one told him relationships were so troublesome!