Romeo... Again... HELP

So I was just in physics. Romeo was sitting next to me like usual. He acted like he never sent me the text that called me a “nasty bitch” and to leave him alone. He acted like he didn’t know I deleted his number from my phone or I deleted him from facebook. He acted like nothing ever happened. He kept trying to talk to me and kept asking me why I was mad but I just ignored him did I do the right thing? Should I have talked to him? What if his friend (which I don’t get along with) sent me the text and Romeo didn’t know about it? What should I do? If you read this PLEASE tell me what you think I should do! Romeo is in my next class and I don’t know what to do if he tries to talk to me again! PLEASE HELP!