My two best friends..., *grumbles* Options

[xoxspanky569]

Ok, my two best friends in the whole world suddenly hate each other. Here is the story. One of my best friends is a guy (we will call him...Bob) and the other was a girl (we will call her...Sally) and we all got along JUST fine during the school year (we go to the same school). All of a sudden Sally went on this cruise for spring break and when she came back she was a totally different person, she didn't confide in us at all and was always acting all depressed. When we brought it up to her, she said that her ADD medicine dosage had increased and the medicine made her sad. I personally find this as bull crap but i was like ok, thats fine. So we stuck up for her when she went on her crazy wild spells of yelling at anyone who got her a little mad. And we continued to try to find out what was really wrong. Eventually school ended and it was summer and Bob went to summer camp for about two months. Sally didn't talk to him for those two months and now he just got back from summer camp and she's being REALLY mean to him. I asked her why and she was like "he just irratates me now, he didn't make and effort to talk to me at all over the summer" let me tell you, she didn't make an effort to talk to him either. Sally was over my house a couple days ago and i convinced her to call Ry- I mean Bob and it ended up in her screaming into the phone. So, things still aren't cleared up. School starts in a couple of weeks and i don't know what to do. How am i going to stay loyal to both of my friends when they aren't on speaking terms? And how do i get them to not hate each other anymore without getting them both pissed at me? I don't want to loose my friends but i don't want to be stressed out for the whole school year. Please help.