This story is probably very tame compared to most since it’s not strictly sexual. When I was in my late teens, my boyfriend was at my place and suggested we try sex without a condom for the first time. Since I was young and gullible, I asked him to be sure to pull out since I wasn’t on any other protection.
So we do the deed, he quietly has sex with me while we try to be sneaky since my parents were downstairs and they had no idea I was even sexually active yet.
Fast-forward a few minutes and he freezes up. He’s still trying to be completely silent while he holds still for a few seconds. I suddenly feel warm and gooey inside my crotch, then I grow more aware of how his erection was twitching and pulsing inside me, and then it just kept on getting more wet and slippery inside me. He emptied his entire load straight into me. My first time without a condom immediately also included my first time feeling lots and lots of cum being deposited right inside my vag.