As someone who was on the 'other side' of an online relationship something like what you seem to be describing (I can't know for sure because I can't know the details) I can tell you that it's awfully, awfully hard for someone to get out of the religion when they want to with all their heart. I did it. But it was hell. And I didn't even want to stay in when I left.
If he has the desire to stay in, believe me, no matter how much you think you love him, don't do this to yourself. You deserve someone who can love you completely. A JW cannot love anyone completely, not even their god because they are always torn over the things that the manmade organization requires of them.
A JW loves no one, truly. Believe that. Those who do, either marry in their faith (as they are told to do, and even then, I don't know a whole lot of happy JW couples...) or they break free of the organization and start a completely new life. that's what I did, but believe me I am the exception, not the rule.
Like Scully said, unless you have proof he's divorced, don't believe it. JW's are not allowed to get involved with anyone new after a divorce unless they can prove their mate committed adultery. If he doesn't have the proof on his ex, then he's either still married, or unable to remarry as far as the cult is concerned.
Run, honey. Far, and fast. You will find another man. Would you want to be with him if he stayed a JW, knowing that you could never, really, in his heart of hearts, measure up because you weren't a believer? Think about that.
keep talking...hope you find lots of help and support here. Welcome pudgy *hug*
essie