Oh honey the roller coaster stops when you tell it to! Hang on tight.
I hate to say this, but the vague language probably means there is an OW. Generally the WAS stays very secretive about it. They do not want to come off looking like the a$$ that they are.
Now, this does not mean it will last. Generally the OP is a temporary fix. It will depend on how you handle this.
It was not bad that you wished him a happy birthday...I still do and we will be divorced next week. Just because this is happening does not mean you don't love him, or even that he does not love you. It just means right now he is an alien.
Im still standin better than I ever did looking like a true survivor feeling like a little kid Im still standin after all this time and Im picking up the pieces of my life without you on my mind..