I had a fight with my classmate....Help.?

I am a16 year old boy and today I had a fight with my classmate. In school we have benches where 2 people can sit on a bench. I was sitting on his bench because I wanted to talk to his partner about a maths sum. He asked me to stand up so I politely told him to sit on other bench. He told no and forced me to stand up. I called him a sister fu***r and left his seat. He began fighting and told me not to say bad words in front of him....I mean I just sat on his seat and he starts fighting.....Bloody Bastard.....