I don't see a problem inviting your xh to Thanksgiving dinner, but I would phrase the invite in such a way that he makes up his mind to come or not. Treat him as you would a friend w/little to no expectations.
Your xh is still baking up and he has reminded you that he wants to be friends and that's where you need to start your relationship w/him again....as friends. You both have changed over the last few years and it's going to take some time to get use to each other and trust me, that's going to have some ups and downs for a while. Go back to being friends, then dating and then go from there. You've got time on your side...use it wisely. Don't rush the process. In fact, I am recommending that you read LouR's recent thread. It might help you better understand the caution we keep telling you about.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
