Once again, should I stay or should I go?

This is awful I am sorry to hear what he has done. My bf and I have been together for about 4 years and at one point in the relationship things went bad and I ended up texting another guy (not dirty though) and I met up with him for a drink that was all(nothing happened). After it I was guilt ridden and told my bf he dumped me etc but we are now back together and have been so good since then. Sometimes it takes a glitch in the relationship to make it better. It certainly did for me. Maybe now he realises he has done wrong and that you are the woman he wants to be with so he will change and realise that nothing compares to you. That has happened to me anyway. I wish you well and I suppose you can give him a second chance and if he seeking counselling then he must be serious about you.