My boyfriend and I found out we’re cousins

r/

So my boyfriend and I have known each other since high school, he was a few grades ahead of me and we had mutual friends in common. We live in a very small town where everyone knows everyone. He lived down the road from me and used to have have parties and me and my friend used to sneak out of the house and go to the parties and stuff but we were never really close at the time just friends of friends. Well of course we moved on with our lives I got with my now ex and was married and had a kid and he got with his now ex and had a kid with her. Well years later him and his girlfriend split and me and my ex husband got a divorce. We reconnected on Snapchat started talking and hanging out.

We were dating about 6 months before we started making anything public and we had our kids meet around the 4th month. Our kids are best friends they are the same age and get along great. And he is SO good to me and treats my son like his own. Well we made it official on Facebook at about 6-7 months of dating. A few hours after making it public we were in the living room with the kids playing games when I got up to check my phone my phone was blowing up. Missed calls from my dad and grandparents. I called my dad back and he started yelling and cussing saying “do you know who you’re with?! Do you know who his fucking grandma is? That is your cousin that’s disgusting.” I was completely taken back. I was trying to calm him down asking what he was talking about. He said that we were cousins and I need to end things immediately. I got off the phone and completely broke down. I didn’t know what to do so I pulled my boyfriend in the other room to ask what we should do. He suggested we go over to his grandparents and ask them.

The next day we went to his grandmas house and she said my great grandma and his great grandpa were brother and sister so we technically are cousins. Mind you I knew NONE of his family and he didn’t know mine. We’ve never saw each other at any family reunions so how was I suppose to know this? His grandma told me we weren’t close and with us already this far into it with the kids it should be fine. My grandparents and dad are absolutely pissed. They are telling me I’m disgusting and they won’t come around him if I stay.

Fast forward we’ve been together 3 years now and my grandparents still won’t come around him and still say I should leave him. It was so bad I would post a picture of us on Facebook and my grandpa would comment on them and say things like “disgusting.” “This makes me sick” I got pregnant and unfortunately lost the baby at 10 weeks and had to have a DNC and my grandpa didn’t once reach out. We also live together now and they won’t even walk in my house if they come to pick up my son they wait out in the driveway. I don’t know what to do.. I hate feeling like I’m losing my family but he is so good to me and my son and we both adore him. What should I do? This makes me feel like such a weirdo but if I would’ve known right from the start it would’ve been easier to end things but it’s so far into it now..