The handful of times we had sex Lisa always made me stop after a minute or so. She flat out told me she didn't want me getting her pregnant, so we stopped way before I could get close to cumming in her. Most of the time she left the room while I jerked off to finish myself.
She got pregnant five times by other men. She miscarried two, gave birth to three. If not for other men getting her pregnant we wouldn't have children. All three have different fathers.