I don't know if I even should do anything, but if you have any ideas I'd still like to hear them.
Yeah, I have an idea. Stop showering with her when she comes home late at night. Just run your hand over her pussy and if it comes out wet or with cum on it, kick HER ass.
Your a pathetic pussy, no wonder she walks all over you.
Divorce her or get a DNA test behind her back if it's not you children take enough as you can to live off and leave the house and never look back
If you didn't do anything about it after she got pregnant the second time, you totally deserve all this. Get a chastity cage and give her the keys, that way she won't have to check anymore. Oh, and let her know how obvious it is that she's cheating on you, and let her use the bedroom so she doesn't have to worry about a hotel room or going over to some strange guy's house any more. You might even get to watch, and you can always sleep on the couch if she doesn't want you around.