Six years ago I had to leave my first love/first boyfriend to move to the US. The move was so sudden that we weren't emotionally prepared for it.
I never knew it was going to be so hard... leaving the one you love against your will.
We did everything we could to save the relationship until the situation got worse and our relationship ended. In some messed up way it ended, and we both ended up bitter towards each other.
Six years passed... all the bitterness has melted away. The feeling has gone stronger and more sure. We're still miles apart... we still chat (but its just dull because we're trying to avoid the talking about our feelings.) We're both in a relationship, that's why.
He recently moved abroad (but in another continent) and is currently going through a long-distance relationship.

What I can't figure out is... he keeps telling me he wants me to go there and see him.
Here's my question:
- why would he say that he 'wants me to go there' repeatedly? Is he just bluffing? Is he just playing with my emotions? How can he propose such a ridiculous idea while being in a relationship with his girlfriend?

-should I completely end my communication with him? What about our closure?

One thing I know for sure is we're both unable to move forward with our lives e.g. getting married until we get some closure. Otherwise, we're just going to go through with our lives unsure...

You are both in relationships, right?

If your boyfriend came to you and asked you this question, what would you advise him to do? What would you do?

Do exactly that.

I don't know that you're "gonna" go through life unsure. If you can't move forward (and I can't address him) then end your relationship, go visit the "ex" and see if you find closure either in being together or staying apart.