Not to be rude or anything, but is he adopted? Or are you not really sterile?
No, I'm the one who is sterile. It's a sort of long story.
I've known my wife since high school, and when we reconnected we had both just gotten out of relationships. Well, she had that birth control shot thing so missing periods wasn't uncommon. We started off as just hook up buddies but soon started dating. Turns out when we first started talking she was already about 2 weeks pregnant. It didn't take too long to figure out that she wasn't just missing periods because of that shot. She told me and together we told her ex. I wasn't going to leave her because of it....he opted to not be a part of the kid's life.
I told her that whether we worked out as a couple or not it wouldn't be because of her being pregnant. So we stayed together and have had a great marriage for the past almost 5 years.