When I was 25 years old I lived in an apartment building and next door was a very pretty Jewish girl who was my age.
We spent a lot of time together, watching MASH and other TV. She liked back rubs. I gave great back rubs. She was a tease. She would be in her panties and strip off her shirt with her back to me so I never saw her breasts. I knew she did not want to have sex with me but she loved those back rubs .

She was so hot, I wanted so very badly to have sex with her.
So one day I conducted an experiment. As I was doing the back rub thing I started working on her legs. Worked my way up to the panties (expecting to get shut down any second for going too far) and reached under and began massaging her vagina. Amazingly she did not complain. Wow!

Every woman's vagina is different so I worked on what I assumed was her clitoris through the panties.
And then another experiment: I said "I want to use my tongue, roll over". And she did!

I kissed on her nipples for a minute (turns out she had great nipples) and then worked my way down. Teased he some by pulling the panties a little so I could kiss on her pubic hair, worked my back up to her breasts and then back down and just took them off. No complaints yet.

I was using my tongue and fingers and she was really enjoying it. It takes women so long to achieve orgasm but they enjoy the process. Meanwhile my dick was hard as a rock. There was a pool in the complex so I was wearing a bathing suit. Southern California, so that's common. Surf's up Dude! ;)

She was really digging getting the oral treatment with me between her legs.
I told her my erection was making me uncomfortable so I had to strip off the shorts. No complaint to that. Amazing! So far, so good.

So I approached from a different angle and laid down beside her, continuing tongue-ing the clitoris and using my fingers. But I had conveniently put my penis right next to her face. After a bit I said "suck my dick". She played with it with her hand some and then, amazingly used her mouth. WooHoo! So this was a side-by-side 69.

Her pussy was reacting very well to my attention and needless to say her sucking my dick was wonderful.
Giving a blow job turns many women on and turns out doing that to me turned her on more than she already was.

Finally she started her orgasm and you know how that goes, all the muscles clench and tighten and while she was in the middle of it, I came in her mouth and we just rocked and rolled through the whole thing.

The whole experience was wonderful and exciting. We never did it again, but once was enough. Soon thereafter we both moved elsewhere and I never saw her again. I like to see a woman's face when she cums, look into her eyes, but couldn't do that then. But it was an amazing experience.