Can our lost love come back to us?

A few years ago I was dating pretty much the love of my life (that is as far as i know obviously). We lost touch when he moved away and I got a new phone number. Recently, I found him on facebook and added him. Today he accepted and we talked for about an hour, reminiscing on old times and he even mentioned that he really misses me. However, he revealed that he is with another girl and she is "the best thing that's ever happened" to him. He did ask for my number and asked if we could chat sometime. My question is, is it possible the feelings we had can respark? Or am I just living in a daydream?