How would you feel?

My husband and i have always had a rocky marriage. He is a lot younger than me and i have really bad anxiety that he doesn’t support me with at all. My insecurities have damaged us and in return when we fight he always verbally abuses me. Belittles me says he wants a divorce, he hates me tells me to stfu. I can be a handful with my anxiety,but he makes me feel worse and insecure. Well, i just found out that he has a best friend(women close to his age) that he knew for a yr because they worked together and she moved out of state and has a boyfriend. I discovered they use snapchat to txt and he keeps in contact with her. I never even knew he worked with her. Never even mentioned her at all to me. Plus just yesterday he messaged her about us fighting and me being jealous about their friendship. Well ya, i think i should be. He never made me feel secure at all. I mean why would you need to be in contact with someone you didn’t even tell me about. I absolutely am sick about this! I told him he is married and he doesn’t need to talk to another woman and especially about our relationship! I want them to stop! How would you feel?!