Should I tell this ladies husband?! Update #2!!

Ok so basically my now ex husband (our divorce was just finalized beginning of March 🎉) cheated on me. The lady he cheated on me with is married, and for the longest time I have wanted to text her husband. I found his number through a little bit of searching lol. I just haven't because she has a family also and I'd hate to put her kids through what mine went through. But now I'm feeling like no, he deserves to know. He deserves to know about the pictures she would send my husband. And the fact that when I even messaged her she tried acting like we could all have been good friends and get together for BBQs 🤡

This happened back in early December though. Is it a little too late?

He doesn't have any social media so I can't just message him

Update:

Ok so I downloaded an app to text him off because at first i wasnt going to tell him who I was. And the first number I found under his name wasn't his But luckily the second was 😅 anyways, I text him. I told him everything, which he didn't believe me at first so I had to send him all the screen shots of her and I's conversation and then when I found the pictures of her on my husband's phone I took pictures of them off my phone, so I sent those to him as well. He hasn't replied since. I feel terrible, again they have kids but he does deserve to know. And it's been on the back of my mind burning a hole that he has no clue. So I understand that I got the divorce and it's no longer my business. But the main reason why I did leave was because it's disrespectful not only to me but to my kids as well. And as a mom, knowing that their mom can disrespect her family the same way just doesn't sit right with me. I don't care what happens next, but atleast the guy knows and he can do whatever he pleases with the information.

Update #2: Nothing juicy to really tell, he has replied. I gave him my real number he called me while he was at work and we talked for nearly 2 hours 😳. He basically just wanted to know EVERYTHING so I told him all I knew from start to end. He had his suspensions but he works late nights, and sometimes away from home. He said he wouldn't be surprised if my ex husband wasn't the first. When he asked his wife about it she said they were just friends (sounds oddly familiar 😂) and that she never meant to send my ex the pictures she did lmfao. But yeah. He doesn't really know what's going to happen. They've been married for 15 years, and he's at a lost. He thanked me for letting him know, he asked about why I divorced my husband (this was the 2nd time within the year I found my husband talking to another woman so it wasn't just this) and yeah. That's about it. I know my ex husband knows cause he asked me if I text her husband so I know they're still obviously talking.