Please help!! His dad called from prison, and he's had a meltdown and gotten into a fight!?!? Please?

Ok, well, I've been dating my boyfriend, Craig, for a year now. He's 17, and I'm 16, and he's been through a lot... His father was a drunk and Craig got beaten daily. He deals with the memories and hurt everyday. He wears all black, has gone through tons of counseling, cut himself in the past, and at times he can lose his temper (NEVER to the point that he would hurt me. But he gets loud, and sometimes throws things. He's a bit intense. I'm the only one who can calm him down, though.) In a way, I'm almost scared of him... of the emotions that he feels everyday, because they are so intense. However, I'm completely in love with him at the same time. For a kid who was hated and blamed for everything by his own father, he has so much love in him, and he's sweet, and caring, and I'd trust him with my life. But yesterday, his father somehow got his number, and called him from prison, trying to be Mr. Caring Father after not speaking to him for years. Craig called me to come over. He was so furious, he was swearing and yelling. I talked quietly to him, and held him close, and told him that he had every right to be angry, but that throwing things and yelling wasn't going to change things. He was so furious, he was nearly gasping for air between sentences. I managed to calm him down though, and he fell apart, crying. He vented for about an hour to me, and he seemed alright then, but I know damn well how much he's hurting. However, a couple hours ago, we went to the park, and we were sitting there, and he was talking to me about his father, and why he's so angry that he called (I was really glad how open he was with talking.) This kid from our school (total jerk) comes up behind us, after he had listened to us talking, and started teasing Craig, saying "Oh so daddy wanted his little punching bag back?" I couldn't believe someone would say anything like that, and Craig was furious. Him and this guy got into a fight, which only ended because a big guy came over and helped me split them up. Craig now has a black eye, a sprained wrist, and a broken finger. I'm getting so worried by all of this lately. I'm so angry at his father for calling and starting this downward spiral with Craig. He told me he was going to see his counselor in a couple days, but I can't stop worrying about him... What do I do? I know I can't fix him or his hurt, but what can I do to support him or maybe make him smile, or get his mind off things???