I can understand your feelings on this, I'm sure it's confusing for you.
About the leaving and coming back thing. Only you know what's right for you...but as you've said already, he's done this twice now to you. Perhaps if he does this a 3rd time...you need to make it a boundary with consequences. If there is a 3rd time, no more chances. You know the old 3-strikes and you're out rule. I know you love him....and only you know how much of this you should take, should he do it again....but remember, YOU enable him to behave certain ways, YOU also enable the behavior to continue. You are treated as you allow others to treat you....just try to keep that in mind when confusion clouds your mind.
Keep on with the counseling as you said. His comment last night that he backtracked on made me think that he was almost trying to pave the way to make it easier for him to go back to that behavior. BF may have another take on that, but that was my impression....so stand firm.
