My BFFWB came twice in a row within about 30 secs - is this possible or was it likely just dry/just ejaculate??

I 29F have a very good friend 53M that I'm ENM intimate with regularly, once every other week for the past 3 months. I'm a lover girl so I've told him I love him & am happily one-sidedly in love with him (I feel this way towards multiple friends, platonic & not), and he's not so much with the sharing emotions verbally, but I can feel how much he cares about me, more and more lately. We've had the very direct chat about how neither of us will ever want a committed relationship and don't think it would work out, but we're happy having sex, going on friend dates, helping each other, being good comrades, companions, etc.

Giving this context BC the men I've already asked about this immediately asked how much we liked each other. I only have verbal confirmation of how I feel for him and he knows he's welcome to feel however he wants for me & doesn't have to verbalize anything, doesn't change me & my feelings.

This last night together we had awesome sex like always, though we did have this unusual moment where we stopped euphorically 69ing and he leaned back on the bed, just....softly smiling at me and caressing my arms up & down. I was ready, so I said "What do you want baby?" He just kept smiling silently so I asked again and he asked if I could reach the condoms. I slipped one on and got on top and when I was getting close he came just a hair too early for me to cum too like I'm used to. We were using a condom (as always) which was coincidentally slightly thicker than our normal. We usually use trojan bareskin raw but this one was a skyn original. Tried hopping off super fast and said "Did you cum honey?" and when he said yes, I said, "Sorry, baby'" and got back on top because I was gonna use his post nut remainder erection to get off even though I know he's sensitive. I've never done that to him. Jumped back on, started fucking and he yelled "Oh god! This shouldnt be possible!" within like 30 seconds.

I slowed and he said he came again, but he knew I was close so he troopered through like a hero and grabbed me hard, gave me some good pumps to get me there & I achieved climax. He didn't let me hop off, he pulled me down hard onto his chest and held me against him still in me while I wound down. Condom was still on him when he slid out, and he said he's only ever experienced that one other time in his life. I said "happy to be in the top 2!!" And he said "no, that was number one, the other comes second."

Tried asking if it was just ejaculate or just a dry orgasm but he said no. The condom was extra full so I suppose I believe him! I just..didn't know that was possible......is this a thing? I feel like I should know this by now in my age smh