I was 19, in the service, and started seeing a girl Ann who was my age. She was pregnant at 15, and her daughter was now 3. The guy who fucked her moved away before she knew she was pregnant. She was known to still fuck around, but she did not consider me to be her type, although she enjoyed my company. She set me up with her girlfriend Brenda, who was 27. Brenda was 3 months pregnant, and getting married in a month. And she wanted someone to fuck until she got married.
I had a place off base in the basement of a house. When I picked her up for our date Brenda said she wanted sex so we went to the apartment and undressed. I was concerned her boyfriend would find out, but she promised he would not.
We had sex a few times a week until she was married, then she said she would have to stop. But she talked Ann into having sex with me. She and I fucked and sucked regularly for 3 years until I was discharged.