As a person who has been fwb with an ex in the past.. prob shouldn’t. When I tried to end it and just be friends he didn’t really respond appropriately with his actions, like still tried to fuck me when we would hang out and ended up SAing me. Even gave him an option to go no contact after I ended it but dude wanted to still be in my life as he put it. Def not your situation but just think about different scenarios before getting into it