Was it something you had to encourage her to learn to do? Did she offer it on her own?
How does the sensation compare to sex?
-- I happen to love this topic and write about it a lot. Consider it research.

Quote by SereneProdigy
I've had it done to me a few times, though most of the times it was the girl who initiated it. It's rare for me to force it or to propose it.
I've mentioned this before, but deep-throating really doesn't do all that much for me; having a pair of firm lips simply sucking on my cock usually feels much better. Plus I have a slightly curved dick, so it can be harder to achieve for some girls (the best position for me to achieve it is to face-fuck a girl that's lying upside down on a bed/sofa). But yeah, the visual can be fun, that is, seeing my cock completely disappearing inside a girl's mouth.
And I vividly remember the first time a girl did this to me too. It was just a random hook-up that I met a few times in a club when I was around 18-19, and we went to her parents' house to fuck in the basement (where her room was). I actually had never seen it in porn before, so I was utterly shocked when I saw my dick completely disappear inside her mouth. I was really thinking: "What the fuck!? Am I hallucinating, it can't be true!? Where is my dick now!?"
Haha, I still let her play with my dick and luckily she explained to me what this was all about after the sex was over. Apparently she practiced this with her previous boyfriend many times before; I guess she was proud of it and was eager to show me her special talent.
And by the way, there's a difference between 'legit' deep-throating and sucking a guy up to one's throat; in the first scenario the dick goes way past the throat, in the second the dick is simply pressed against it without passing through. Some girls thought they were 'deep-throating' me at times, but they were simply swallowing my cock deeply up to their throats.