Husband left me..We have 3 kids and I miss him so much!! How can I get past this?

My husband & I have been married 2 years. 3 kids. Well 2 biologically (my oldest sons father ped away,he only knows my husband as his dad) The kids are 9,2 and 1. A month ago he told me that he doesnt want to be married anymore & left. He is now staying with his mom, paying no bills & enjoying being single. I am working 60-70 hours a week to make ends meet & taking care of the house & kids alone. My husband tells people that he only married me for the kids & that he has been miserable with me. That devastates me because I thought we were happy & I gave him everything & anything he wanted. I have always been the breadwinner & everything is in my name. I want him to come home but he said he doesnt love me & doesnt even like me. Those words killed me or atleast made me wish I was dead. I am having a hard time getting over this. I dont like giving up on marriage. I hear hes with someone else - the girls ugly & has a drug problem. Why leave me & the kids and then be w/someone like that!