Breath, life has a better plan for you always... Dont judge him because we dont know why he is acting like that and you are building up resentment that its not going to help you... All you can do its accept and move on, and stop analyzing why is all that, when we ask after our partner leaves why all what we are really doing its engaging in a natural mechanism that our body has for healing, basically we ask why to find a reason to accept, the hardest the pain the more why we ask, then we find solution and temporary cure for the way we feel. Instead of asking just stay still and accept... Why he is dating? I dont know but is his choice at this point so Ill accept it. In this forum some people reconcile and I can tell you that those few are the ones who accepted and didt ask questions.... Imagine in 3 months your H comes back and wants to work in the M, then all this 3 months you had build this resentment and once he open his mouth you bomb him with resentment.... Will he stay after you just judge him or will he leave again? Now he comes back and you just enjoy with him, you know your boundaries so you know how to react when something hurts you, he sees you accept him no matter his choices in the past.... Do you think he is gonna give up that? Maybe but it will be harder for him because you accept him totally... Now here you have a choice, do you want him back or not?
When the student its ready, the teacher will appear... Even after all this time the sun never says to the Earth, "You owe me." Look what happens with a love like that,It lights the whole sky.