I feel like I should tell my friend I'm sorry for something I didn't do?

My best friend has kinda been 'chasing' one of our really good guy friends. She asked him to the V-tine's dance that was last weekend. He said no but then went with someone else. He told her no because he was afraid of her because of what she had done in the past. I feel like I should apologize for everything that has happened because he fells 'stuck'. Should I apologize or just leave it alone and forget it?