What worked for me was journaling and writing my feelings out. Caustic feelings are pretty much guaranteed when you feel betrayed. If I could spew the venomous stuff out in private writing (that Wife never sees), that helped me get beyond the emotional turmoil to the real underlying issue, going from "I hate you! Go die in a fire!!" to "When I'm lied to, I feel disrespected and disregarded."
That way you're not bottling up or spewing uncontrollably.