Separation from the Relationship

So he wants to take a break for several weeks from the relationship to get himself together?
But what does he have to do in several weeks that he can't do sooner and work at it together??? After just finding out on Valentines Day of this year his ex-girlfriend keeps calling him, even though she somehow got a hold of his new number he claims he didn't give her, he hasn't told her he has a girlfriend for the past 11 months! I just don't understand how he would get on my case for talking to my friend (though he is also my ex from +5 years ago) who knows i am in a relationship from the beginning and he is also in his own relationship, that my boyfriend couldn't even tell his ex he was in a relationship. Next month will be our 1 year anniversary.
So now he wants 3 weeks to get himself together to be the man he wants/needs to be for himself and for me.
What am I to think?!