Why would he do something like that?
Most Helpful Guy
He probably just wants to be close with you and ofcourse has a thing for you.
The idea of people being around but no one awake gives one a sense of being alone and also a kick and kinky excitement.
Either of these things explains his situation.
If you don't want him doing this or more to you, you must not allow him to touch you or any such thing next time.