Open relationship

So me and my bf agreed to an open relationship and so I decided to hangout with a close friend and well that close friend ended up trying to get sexual with me and of course (I did not I actually felt really uncomfortable) well now my boyfriend keeps saying I’m a hoe and a cheater when I was completely honest with him on what happened.. I actually cried because I got treated like that and felt uncomfortable and now he’s calling me a hoe saying I sucked that guys dick and fucked him.. now he’s trying to message that dude asking what did we do SMH.