Just need to vent

So I’ve been married for 5 years and have three beautiful girls with my husband and I have a 6 year old going on 7 son with another guy. Met my husband when my son was one. Well now im going through a nasty custodial battle with my sons father. He even accused of me having and selling drugs at my house. Mind you I’m a Christian and don’t have or use drugs or alcohol. Now my husband wants to divorce me because i have to have an investigator come and inspect my house. And he doesn’t want himself or our girls involved in any of it. I’m so hurt the man that i love wants to divorce me because my sons father wants to be an a-hole