Can I still be weird with my ex?

I don't think he would mind. It's more for personal amusement. His family loves me. I was thinking to go over to his house, return his thing he that he left in my car. But I'm going around the time he's still asleep, he wears an eye mask when he sleeps so I want to whisper in his ear something creepy like, you have lovely skin... I can't wait to try it on. Or there are only four layers or less of cloth separating us from ecstasy. I would personally enjoy it a lot, I just want to really creep him out.