Mine was cheating too. Drugs are one deal breaker and this is another deal breaker. Once a cheat always a cheat. Once an addict always an addict (just a question of acrtive or recovery!).
I met her one day a couple of weeks after he moved out. I saw her and my first thought was 'he left me for THAT?"
On an different forum he is claiming to have "changed fields and is doing something more lucrative now..." since he grows pot I wanted to respond, "Oh yeah? I thought it was a Green house not a field...." I am sure she is a supporter of his "more lucrative field..."
I didn't say that. I did respond by saying, "Great1 Now you can pay me back the money you owe me..."
Use anger to get thru it and walk out the other side all new.
Be angry and use it to get past it. You are too good for him.