Really good sex but no noticeable orgasm

I recently met someone after a multi year dry spell following divorce.

I’m extremely comfortable around this person and enjoy every second of the act. It’s even quite intense at times but I don’t make it over the edge yet my body is completely alive with hormones/blood. It feels really fantastic. I would like to finish.

I don’t know if this plays a role but the sessions are long which is more than enough tine to achieve.

So first let me say that I’m don’t feel I’m getting shortchanged here because it does feel so good, this is more of a curiosity thing than a problem.

Often after sex, when he no is no longer in me, I feel tiny pulses of pleasure as if I did cum, which I can’t explain/understand what’s happening with my body. I have never experienced sex like this before.

Any thoughts?