Only did it once with my partner, when circumstances were that she wanted to try it, also had phone sex once per her request. During mutual masturbation she wanted me to cum first and it got her off.

I had a thing for my French teacher in high school and I tried hitting on her in my senior year several times. She was single, never married, very quiet outside the classroom so I figured she might be gay. But had she allowed it, I would have been her oral slave until I went to college and that was when society would not have put her in jail. I wouldn't have told anybody anyway, not even my close friends. I just wanted to get my head between her sexy legs.
It gives me tremendous gratification to satisfy a girl/woman orally, i.e. giving her orgasms and I will forego reciprocation or additional sex to convince her that I can be patient and accommodating. However, 69 is the ideal oral experience for me, to see who can last the longest or who can make their partner want to come first. It does not matter to me if she swallows or not as long as she enjoys what she does.