New and totally confused

[~¤DG¤~]

Welcome to the community. You will find a lot of people who are in the same situation and will be a wonderful support system for you.

I guess I am a little confused as to how he doesn't know if he is in love with you if he's spending time with you, your physical relationship has improved, and you spend a lot of time together as a family.
However, that isn't for me to figure out.

I think you are making positive steps for yourself (joining the gym, etc) is there any time that your H takes the kids so you can have some time to yourself? If not, maybe that is something you should discuss with him. Give you time to figure out what it is that YOU want out of this M.