My guy sometimes sticks his penis between my buttcheeks while I'm sleeping - "for safekeeping", he says.
Depending on the relationship, I don't think stuff like this is a big deal.
Also, I like to "wake him up" with a blowjob. Technically, he is often still sleeping when this begins but I asked him if he considered it a violation and he laughed so hard I think he blew a blood vessel in his cornea.