Hi, so last month I discovered my fianc had a child with some girl when he was 15. He didn't have anything to do with this kid at all while he was growing up. The kids mom basically just dropped him now 14 off at our place and was like, "uhh yeah I'm done, he needs a dad, here's his stuff, peace out!" and left him with us. She won't return any calls or anything.
So now I'm 22 and stuck living with this kid who I didn't even know about, and I never wanted to be a stepmom. Our first child was supposed to be the first for both of us, not just me. I've tried talking to my fianc about other arrangements for the kid, but he just says it's his responsibility, and I really don't see it that way! They don't even know each other! It's changing everything, even down to our wedding, and I'm just not that into it! Help?