Most Helpful Guy
Hmm, this is purely based on assumptions, but I feel like he is probably lonely now that he is lonely. The single life is probably not what he thought it could be and he is feeling needy right now. The easiest option for someone in this situation is go to what is easiest, AKA you. He may have tried to contact other people first with no avail, and came to you after, or conversely, you may have been the first he went to, if he didn't have anyone else to turn to. I would say this is the most likely scenario. He is feeling needy, don't be fooled, in this state he will probably say anything in order to get the attention he wants, then when his needs are fulfilled he will probably just fuck off again.
Most Helpful Girl
Many times over, Sunny88, just because two people Break Up doesn't mean they Can't And Don't Make Up and that it's Goodbye, my love. And with an "EX" that marks your soft spot with an X, I always find there is Motive and Opportunity if given a chance for what I Call----Friends with benefits.
Of course after a "few months now" and still counting, he is Obviously Missing the Kissing that he had with you. After all you both are this item at one time, have a history together and along with this, he is feeling lonely, Feels Comfy with probably no one but you that he would really want in his life right now. It Is a newbie breakup.
However, a Friends with benefits factor may be the Other thing he wants in his 'Life right now.' No hooked at the hip, being two birds of a feather and just be together whenever the moment feels right. Knowing him better than anyone and telling us how "Cold" he can be, you are also pretty wise to maybe what I am saying.
It's your choice, your call how you would want to handle this sort of Ex flame. If you feel you don't want to have History repeating itself, then Silence is golden, blocking your phone and losing all Contact is one sure way to blow his light out.
Good luck. xx