You have come to the right place.
A situation similiar to this w/o knowing the details, is how I got my cat, Kylie, she has been in our (my greyhound Shaianne) lives for 2 1/2 weeks.
Is there a family member or close friend that could take him? That is how I got Kylie, she was miserable at home due to one of my best friends boyfriends and hid all day and all night. Jodi wanted her to have a better home where she could still see her and maybe possibly get her back someday.
Please keep us posted, we are here to help and I simply can't imagine the heartbreak you are facing and going thru. We are here anytime!!