Say sorry for the actions you've done
I know we're not on speaking terms now. Still I would like to say I'm sorry and I really mean it. I'm sorry for doing all those stupid things, I deeply regret it. I know it really got you upset and disappointed. It was something I did on impulse, a reaction to that particular moment, I didn't mean to offend you in anyway.
If you would like to talk things over just let me know.