[F19] I got impregnated by the former virgin [M32] that saved my life

I was on my way back home from a cosplay convention, taking a shortcut when some dude threatened me with a knife. Not sure if the dude was trying to rob me or worse, but then this other guy appeared and beat him up. He got a little stabwound in the process however, so i joined him in the amublance, expressing my gratitude for his help. He said he had no intention of dying a virgin, i thought i at least repay him with a kiss.
Of course i told my mom about what happened, and she quickly made the decision to invite him to a dinner to say thanks. And she's been inviting him a lot, trying to get the two of us to date. Telling me that i won't find a man as good as him among thousands and such things.
Well, i wasn't so sure about dating cuz like for a start he's quite a bit older than me, but given what he said about being a virgin, i at least let him fuck me. I thought it'd be the right thing for such a hero. I even put on my cosplays for him cuz he's a massive nerd. It's been going on for a while, and as is turns out, i'm pregnant now. And honestly, i am not even made. Maybe even a bit happy...