My wife is sleeping around on me with a close friend and i’m a broken man

I(29m) lost myESA dog/coworker in an horrific manner, my wife(28f) was fired from her waitressing job for stealing tips, her car blew up and i’ve had to accommodate a friend in return it felt and still does like being kicked whilst i’m already on the floor. I’m a broken man, my world is in shreds, what little i had left is being taken away and shes not even hiding it anymore. Everytime i turn around there he is, my ‘best friend’. I’m just a broken man at this point, it felt like nothing could make my life worse but i guess i was wrong.