Sometimes filing for legal separation is a good thing. I think this would help protect you and the kids. You also need to stop protecting your H from his family. If you need help, ask for it. Don't lie to them, don't tattle on H but the truth is the truth.
Me: 35 husband:39 Sons 16 and 11 from my first marriage Twins 5 (boy/girl) Daughter 3 Affair bomb 2/27/14 He moved in with ow 3/13/14 OW kicked him out 6/15/14 4/2016 he seeks help for sexual addiction