My ex cleaned up...

So my ex, my kids dad, was an alcoholic and that’s what ruined our relationship. It’s been about a year he’s been sober and back to his normal self. I’m so happy for him. We hang out with the kids together a lot now. I didn’t think I had feelings for him anymore til BOOM the news flash of my feelings hit me. I really like sober him very much. He’s so sweet and caring like he used to be before he had his problem. He’s going to counseling and just working on himself to the max. His progress makes me happy. I know he still loves me very much. I love him very much too but I don’t want to act on it though cause I’m unsure. I don’t know what to do. I’m trying to wait it out to see if maybe I’m just being crazy or something. Do you all think I’m being crazy? Should I act on it. Should I confess to him? Please be kind with your responses. Thanks in advance!