welcome to the "Ball of Confusion" that is sex. I don't know how old you are but I was into my 60's before pushing those boundaries you clapped on my earlier post. Thanks for those claps anyhow. It took me a good few years of living in Asia to take those encounters in my stride.
At the endof the day love is love, gender does not matter.
Oh btw, I love giving the big 'O' for a long time. You say you are not sure about it, but like so many of these things, it's about trust, and relax, let their tonhue and fingers do the work. Shut your mind down and go with the flow. Maybe you feel embarrassed about letting go of the liquid?
Go with the flow is more than about the other meaning.
If you want to chat anytime, just give me a nudge. Read some of my earlier stuff on here, or look up my books on www.brianandbyron.com