Thanks for finding this place and sharing your situation. *hugs*
Congratulations on listening to your bull$hit meter, paying attention to his changes and facing your fears.
Your spouse is in charge of his actions. You cannot control them. You CAN take ownership of yours.
Make positive changes for you.. if they happen to be ones that remove the negative for him, even better.
You're worth it..
*hugs* His behavior compels you to do uncharacteristic things.. like searching through his truck, etc. If something seems that drastically wrong.. something IS.. whether it is an affair or not.
Work on you. Sorry to hear the weight loss has been stress related but congratulations and good job on going to the gym! Seeing a counselor is great, too.