When I was in college, I met a girl that lived in the dorms. It turned out she was still a virgin, but she loved oral, both giving and receiving. Her mom had taught her how to give blow jobs to make sure she wouldn't get pregnant. She would rub her clit up and down my cock and a few times put me inside her pussy until I was up against her hymen, but made sure I never broke it. One night I was late getting to her room, and I caught her sucking off another guy. She opened the door and immediately got in my face about being late, while the other guy was laughing his ass off and trying to get his pants on. The guy got out the door while my girlfriend kept right on chewing me out, so I grabbed her head and shoved my tongue as far into her mouth as I could, which shut her up instantly. We broke the kiss and she promptly started sucking me off, like the other guy was never there.
Unfortunately, I was unable to recognize all the perfect qualities she had to be a cuckoldress. She was what I wanted for a wife, and it still took me another 2 years to understand how difficult it is to find women like she was. I still miss her, even though it's been 53 years since I last saw her.