Most Helpful Guy
He is obviously lonely and maybe he realizes what he lost. Maybe he wants sex and thinks you would be ok. You should simply ask him. Although I am married, I am friends with many of my old girlfriends and their husbands. We have learned that, although we may have been "in love" (or so we thought) we now realize that we were obviously not right for each other. That does not mean that all of the good memories we have are not worth reminiscing over. It also means that, when we need someone to talk to, we can still talk. It is understood that there is a line that will never be crossed in order to have intimacy. Maybe your ex just wants to connect as a friend. In any case, you should simply talk to him and, if he has ideas of getting back together, you should go over what broke you up and, you want, take it slow. If he is only calling to see if he can get easy sex, taking it slow may expose that. If you have no desire to restart the relationship, let him know. 6 years is a lot of time and people grow and change, with is another reason to go slowly.