Girls just shy away from sucking at first. Once they give a blowjob, all their embarrassment disappears. They begin to work on the technique of moving the hands, taking the cheek, dipping deeper and deeper into the throat. If the cock is not too long, they try to take it all in their mouth, to get their nose against the man's pubis. A little alcohol and she can already suck your friend's dick. It's a nice feeling when you mold a modest girl into a real bitch. Now for her to take cum in her mouth and swallow it becomes the norm. Gradually you get to her ass. After that, she no longer cringes if you treat her in bed as an available woman. It even turns her on.
The teacher is pretty advanced - letting students fuck in front of her and giving her advice is cool. Sure, the student was a little shy at first, but that passed quickly. I, too, think we need hands-on sex lessons, then it will be proper and safe. And still the guy cum on the boobs of the teacher - after all, the students have to somehow thank her for teaching them.
She's not even getting fucked, she's just pretending to get laid