Polygamous Dad? Thoughts?

Hi! Just wanted to share another interesting post I read an article about. It's also from Reddit, I believe but I thought this might interesting to discuss.

Here's the story:

And although you didn't ask here's my take:

I think if I were in this situation. I wouldn't feel like the asshole. He's asking for a lot and it's her wedding. She technically doesn't have to give out +1 as all. And on top of this, they don't really have the same relationship as her mother so for him to compare children that are included in the wedding itself to women the daughter hasn't even met I think is childish. Plus, this doesn't seem like the most ethical of polygamous relationships. But im not gonna focus on that part too much because to each their own. I wouldn't personally do it but I absoloutly don't judge those who do. It doesnt mention in this part that i screenshot but the bride said he is the only one in the relationship allowed to date. This girlfriends aren't allowed other partners.

So discuss