Follow Amy's lead

"Well, I kind of like Amy's suggestion...actually, both of them!" you say, your left hand sliding behind Ellen's round ass and caressing it. She doesn't stop you, so you leave it there.

"It would be fun to fuck your brains out, and I don't see anything wrong with sharing your bed, though as small as it is, we might have to sleep stacked up." The girls laugh and Ellen gives you a playful shoulder butt. It pushes you against Amy, who pushes back. You bounce back against Ellen, then Amy's fingers are at your ribs, tickling. The horseplay continues, the three of you falling back on the bed and groping, tickling and you manage to cop feel of both girls' tits. They are laughing and don't seem to care much what you do.

When Ellen reaches over and gets hold of Amy's blouse, Amy pulls back to reclaim it. All the motion does, however, is to serve to liberate her tits from it. The elastic slides down and contracts just under those milky globes. Suddenly all three of you freeze, staring at the naked flesh before you. Amy straightens her back, which pokes her tits out further.

"So, you want to play rough, eh?" she says as she reaches for her roommate.