I also didn't know how to approach a guy for that sort of thing. I was having trouble finding my perfect guy. I didn't want a guy that was too old or too fat or whatever. I didn't want a guy that would 'look down' on me.
My problem was I was looking for a certain kind of guy that I would like to suck. Then, I couldn't wait to feel a hard slab of man meat fucking my face cunt. After awhile, I started wondering what it would be like to suck a cock myself. Gradually however, I started getting into watching hot girls sucking cocks and then really focused on the cumshots. I still love watching two hot girls suck each others juicy cunts. Then I started really liking lesbian action. I started out liking the basic stuff, girls getting fucked hard by big dicks.
But once I realized it, wow! I first started down this road to discovery while looking at straight porn. I didn't know this until I was over 30 years old.