any advice about my male bestfriend?

So I have one and only male bestfriend and I’m a female I’ve known him for eight years and for sure we admitted not having any romantic thoughts about our friendship and interactions. He’s straight and I’m pan and currently with a girl and the reason I don’t spend much time with dudes because I had bad past experiences with guys (not even in relationship, strangers, groomers,..) so he’s the only one I actually feel comfortable hanging out with. But lately, well, we usually go to hardcore shows together and I often dress emo or goth, punk and most of my outfits are kind of revealing because these clothes make me feel pretty not because I want to catch anyone’s attention. While we were talking after a show last week I caught him occasionally glancing at my boobs which I felt kind of uncomfortable but I didn’t want to assume him so I just put on my jacket. This problem has started months ago whenever I wear my true styles and it creeps me out a lot now Idk what to do. (I might delete this to avoid him seeing it)