Husband has cuckold fetish

Me and my husband have been together for 8 years married for 4 years and he never had this fetish until like 2years in our marriage and he has been just constantly wanting to talk about me with another man and he has obsessive over wanting me to take a big dlck and telling me I deserve a big one since he’s not big I don’t want to do the real thing but we pretend sometimes but now at the 4 year of being married he has been being more about the fetish and always says ugh I wanna see you with someone and I just recently found out he made a profile of me on Reddit and telling guys “who wants to fuck my wife” this has gone to far and he has giving them my instagram so they saw my face I don’t know if he’s sent them nudes and I spoke to him and he says he will delete it but I feel sick just two weeks later I found that he has another Reddit messaging all these women tell ting them that he wants to have sexy with them raw and that he want to see them fuck a guy with a big dock I feel so depressed and don’t know what to do I feel like he has been insecure about his penis and I feel like his fetish is fake please help me

tl;dr I need advice should I leave him or go to counseling