cheating or not?

So my boyfriend was talking to this whore and I found these messages. I've been screaming at him and all he's been saying is that he did nothing wrong when he's told her he would take her "any day". He said she was his rod and that she was a "sexy ass savage" when I was dating him. He keeps saying that it's not cheating when I personally think it really is. Please comment your opinion it would be greatly appreciated. Ive been screaming and crying at him and he says she's a good friend but it seems like he's more than friends with her. I'm very very pissed please help.