Do I have to appear in court for my boyfriend's battery case?

Do I have to appear in court? Can I send a letter stating the truth? My boyfriend and I were at his brother's house and we had an heated argument. I left walking at 9 p.m. going to my dad's house when he grabbed me saying that it was too late and cold for me to walk by myself to call a ride. I was being stubborn, he grabbed me a few times and we were tussling we fell on the ground twice. Some one called the police. When they pulled up we were on the ground. I lied about some things now he has 5 charges, 3 are felonies and a no contact order. We have a son I don't want to press charges, how do I make it right I don't want to get locked up. I was mad at him at the time. His charges are domestic battery, battery with injury, criminal confine, strangulation, battery/bodily waste. I was subpoenaed.