Not first time posting this

To make a long story short, i have a confession to make. i (18M) like something i don’t think i should. So one day my girlfriend at the time was milking me from behind and i unknowingly started twerking. “Oh i didn’t know you can do that with your booty” she said. I got nervous and froze..”do what?”. She proceeds to ask me if she can record to show me. I obliged of course and continued doing what i was doing. She slaps my ass and says “shake that ass for me baby”. Like out of a porno, my dick got rock hard and i got up on my hands and knees and started to twerk while she yanked on my cock. She spreaded my cheeks and spit in my ass. And i came so hard and all over the place (this is all caught on camera btw). Now ive twerked and came a few times and i really enjoy it(have multiple videos of it lol). So my question is.. any insight on me liking how my ass looks in these videos?