Is it normal i like breathing my roommates breath?

It sounds a little weird but hear me out here lmao. It's like a comfort thing, when my roommate falls asleep I kneel by his bed and put my face really close to his and share his breath. I like the steady breathing, the warm air, and the smell, plus it feels really intimate and like bonding. I can do this for up to an hour, but sometimes he starts coughing because of the CO2 going back and forth and I pretend I was just doing push ups on the floor.

My roommate and I are really close, and though I'm not gay, I feel kinda guilty sharing this experience with him because he has a girlfriend and I can see how it's sorta creepy. I never touch him or anything, but it's sorta weird using someone for relaxation and that warm feeling. I don't think I'm doing any harm or stepping over any boundaries.

If he wasn't a guy I think I'd get a sexual thrill out of it.