Well, I would probably feel the same. Then I would change my attitude to convince myself that I’m the prize and he needs to work very hard to win me back. This is what your ex needs to do too. If you are the one he really wants, he will pursue. If he is still not sure, there is nothing you can do except to give him some time to figure it out. Meantime, you need to be the best you, happy, upbeat, confident, and a little mysterious.
I don’t think he has any thoughts that you are not interested. You accept his invitations, you talk to him, you text. Get rid of that fear! It will translate into you looking desperate. He should be the one to be afraid that you will not want to do anything with him after what he is done. Release all the expectations. Enjoy his company and continue doing what you were doing before he reappeared in your life.
M:50 H:52 S28 (my S from previous marriage) M:17 + 3 BD: 06/12 S: 06/12 - H works in another state