Valeria, I'm glad you came back to post. Wow! How do you feel about your xh wanting to return home? He is showing/proving to you that he wants to reconcile? I don't mean just saying the words, but actually showing you that he means it.
Val, it's going to take a lot of hard work and patience....I wish you and your family all of the best. But, yes, it is ultimately up to you as to whether you want to reconcile w/him.
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.