>28m bisexual
>generally don't feel much satisfaction from ejaculating, even during oral/physical sex from either gender
>wondering whether I'm depressed, dopamine depleted or my dick don't work
>went to the gym tonight
>spot random t-shirt near the lockers when I went to take a piss, forget about it
>come back afterwards to have a shower and get changed
>t-shirt still there, pick it up and took a whiff of the pits for some reason
>mix of sweat musk and cheap body spray
>as if im possessed by an incubus, feverishly jerk off with it in the shower, blow the fattest nut I've ever blown, tingles throughout my entire body, brain went blank
>put the shirt back where i found it and went home

what gives? am i just a degenerate or is there something going on pheromone wise? i don't usually think about/do these things and it's caught me extremely off-guard