Freshman year of college I dated a girl who came from a religious family. We both were still not ready for penis-in-vagina sex, but were willing to lie to ourselves that pretty much everything else we could think up was okay. I definitely developed a number of kinks from my time with her.
Heidi and I would spend the night at each others houses often, and it usually ended with either a lot of sexual tension or her begging me to slide my cock between her thighs while she touched herself. She was withholding in most ways; she wouldn’t give me oral, she didn’t want me to finish when her hands were on my cock, and, most extremely, she eventually told me to stop masturbating and would often not let me cum when we were together.