Cumming from only sucking cock and not touching myself

I’ve always been extremely turned on while giving head. It’s one of my favorite things to do sexually. In fact, if I have sex and I don’t get to suck dick I am a bit disappointed. I get so into it that I have often thought to myself “holy fuck, am I about to cum?” But in all the times I have felt that sensation, I have never actually cum from it. That was until last week. I was sucking my husband’s dick in the normal way that I do which is like a goddamn lunatic banshee. Deepthroating, facefucking, rubbing it all over my face and tits, moaning, etc. and suddenly I got that same sensation like I was building up to an orgasm. This time I leaned into it and focused on the feeling while continuing to bear down on his cock. It kept building until finally I knew it was going to happen. I took him all the way in and let his dick muffle my moans as I shook through one of the best orgasms of my life.

He looked at me and said “did you just fucking cum?!”

All I could do was nod yes and say mmmhmm with his cock still in my mouth as my eyes rolled in to the back of my head. He blew his load down my throat shortly after despite me giving a lack luster effort due to my crippled post-cum dexterity.

I wanted to know if it this was just a one off thing so 2 nights later I got right back after it and THE SAME THING HAPPENED. I feel like I won the sex lottery. I hope this is permanent.