I remember both my first giving and receiving. Both were summer of 1979 first summer after college.

Making out with M, my more steady girlfriend from high school in a bedroom at a party and I got her naked and went down on her. Wanting a bit of reciprocal action ai started to undo my pants and she sat up. Mood killed because I think she thought I wanted intercourse which I didn't. Mood killed

On a date later that summer with T, after a movie we found a 2 track outside of town, drove into the woods and started making out. I eventually fingerer her to orgasm. After she was able to sit up she started a hand job. After a while i said "I don't think anything will happen" and she said " it will" and knelt on the passenger floor1 of my 73 plymouth fury and started sucking until i came in her mouth! First BJ included a swallow