Most Helpful Guy
You will never trust him and you won't feel love for him. Staying in that relationship sets a bad example for your children. There are men out there who don't cheat, but your husband is not one of them.
Most Helpful Girl
As wise as I am here, @maygaltoo, I also have a reputation for being a Straight shooter here, dear, as well.
He is a bull crapper and Cheat and you cannot trust him as of Now. The First time was a slap in your face and the Second Time, is even More of a Disgrace. And if you haven't noticed, the writing on the wall and all always points To... Different girl, Different company.
Things with the Newbie seem to be heating up just a bit too much for my own liking. He isn't 'Discouraging' Anything from where I am sitting. I see a little too much of munching and messaging and even movie star pix of herself and with him being a married man, I am asking myself: What's next in store with perhaps more?
You need to sit him down and have another talk with Joe Schmo and lay it on the table for him that it take Two to tango and Two to Tangle and by the looks of things, it is Looking More like an evil web of Over time fun around that water cooler on the clock and who knows... After hours.
There are Many names for a guy like this and I like your 'Serial sleaze' as one of them. Add "Cheat sheet" to that list of Same names.
Keep your eyes and ears Open and if you suspect more hanky panky, show Joe the door and Hand him his walking papers. No more baloney, Three Strikes then and he Is... OUT.
Good luck. xx