Me and my friend like sitting on each others faces

Yeah so I've been friends with this guy (I'm a guy too btw)ever since we were, like, 4 and it's not until recently that we've discovered that we like having our bare asses in eachothers faces.

We're both straight so its probably just a puberty thing what with hormones and shit but we both rly like it. we often just "wrestle" and end up with one of us sitting on the others ones face.. and then vice versa..

But the thing is we haven't expressed the fact we like it yet. its obvious that he does like it because they'll be times where his face is nowhere near my ass and he'll just force himself to it; and he always says "Uh oh... please don't sit on my face now..."

We both pretend we hate it but its clear we both like this, however neither of us ever call the other on it and we just continue as if nothing's wrong. I like having his cheeks pressed up right onto my face and vice versa ... is it normal?