Remind him everyday you only stay for the kids (if you have any) and remind him that your children think you're blissfully happy and every moment of every day it kills you to keep up the act.

Yes, that's very detailed because that's what I do.

I’m surprised that you have moved straight past hurt and confused to revenge. Let it go, let him know you know and what his feelings are. Perhaps the problem is he feel he isn’t getting his needs met? If you can move on from this it could help your relationship and make it stronger. Otherwise it may be best for you to let him go and move on.

Is he still cheating?

I found out my husband cheated and I took it straight to the source. Him first and then her and I made her look me in the eye and bare witness to the hurt and devastation she caused our family .... in her office, in front of the staff.

Then I kicked him out and I got on with my life.

Put chilli powder in his jocks. He might think he's got an STI.

The best revenge is living your best life.
Pack up and leave take half his super and joint accounts and file divorce.

Leave a note in the letterbox or get a sim and start texting him... then accidentally find the text or letter...

Grow up and sort it out or leave. Some people take marriage seriously.

Move on, life is too short to waste time, could you ever trust him again? Unless you have children then I think it would be in your best interests to get out of this relationship and start afresh. I know its a painful process but in the end you will be thankful for taking the brave route.