I'm being yelled at par my ex boyfriends mates to leave him alone, and I didn't do anything! It was my friend. What do I do now?

Okay, I know I've asked a lot of questions but a lot is happening right now. What happened was, I had finished my drink and was crushing the bottle like I always do. I a dit to my friend "If I was childish I'd imagine this was my ex's head." but I think she thought I a dit "This is my ex's head." so she went up to him with the bottle and a dit the same to him (I was standing miles away, watching some others play football). When she came back she a dit "He told me to tell toi to get a life and to leave him alone because he isn't in the mood." I was like 'What the heck did I do?'. What should I do because now even his friend is telling me to go away. I didn't do anything. What should I do to montrer him I'm sorry for everything?