My son (20) is in a relationship with his 1st cousin (19 F). He’s an adult and lives on his own. I obviously don’t like this but still want to support him and he’s technically not doing anything wrong, as it is legal in the state we are in. What would you do in this situation?

Edit: For context, he didn’t grow up with her and didn’t meet her until a couple years ago.

2nd Edit: I’m aware of the genetic risks with children and have cautioned him about that. He says they would not have children together. No need to keep commenting about that.

My wife was a bridesmaid in one of her close friend's weddings this weekend. She had been involved in the planning for months with dress fittings, rehearsals, group chats, and everything else. I was not involved at all. I figured if there was anything important I needed to know, she would let me know.

I got dressed in what I thought was appropriate and we headed to the wedding, but as soon as we got there, I realized something was wrong.

Every single man there was wearing a black tuxedo with a bow tie. Not just the groom and groomsmen. Every male guest. I was the only guy in a regular suit.

I felt totally out of place. A couple of people joked that I must have missed the memo. They probably did not mean anything by it, but it was still embarrassing. I stood out like a sore thumb.

I asked my wife if she knew everyone was supposed to be in tuxedos. She just said, "Oh yeah, I forgot to tell you. I was busy helping with wedding prep."

That honestly made me feel even worse.

She had known about the dress code for a long time because she was in the bridal party and had been talking to the bride the whole time. If she had mentioned it, I would have rented a tux. Instead, I spent the whole night feeling self-conscious.

When we got home, I told her I was upset. She said I was making a big deal out of nothing because nobody cared what I was wearing and that I should just laugh it off.

I told her it was not really about the tux. It was about the fact that she knew, I did not, and she never thought to tell me. It would have taken five seconds to mention it, and it would have saved me from feeling embarrassed.

Now she thinks I am overreacting, but I feel like my frustration is justified.

AITA?

Edit: A lot of people have asked why I didn't check the invitation or ask about the dress code. That's a fair question. I assumed my wife would have mentioned something out of the ordinary since she was part of the bridal party and knew all the details. I also didn't think much of it because every wedding I have been to before, a suit was perfectly appropriate.

I take responsibility for not checking the invitation myself. My frustration isn't that I think it was entirely my wife's responsibility. It's that she knew every man was expected to wear a tux, knew I didn't know, and simply forgot to mention it. If the roles were reversed and I knew something that would have left her feeling out of place all evening, I would like to think I would have mentioned it to her. If she had mentioned it to me, I would have rented a tux without hesitation.