Dealing with breakups

This title is slightly misleading, don't worry, I didn't break up with my boyfriend, however one of my bestfriends and hers did.  They both are very special people to me but when put together the two of them were horrible.  They didn't trust eachother, they were both flirts and the relationship was riddled with holes as if it were swiss cheese.  Another thing is that a part of my own relationship with my boyfriend has hinged on our friends relationship, because she is my best friend, and he is his.  In the past we have tried getting the two back together but now we have decided its best they are split.  Why?  Because they bring eachother down.  I don't mean morally or anything, but emotionally.  They both believe they are putting there all into their relationship but it isnt working, so they blame the other person.  Its not uncommon for teenagers to be like this I hear, I am told my boyfriend and I are extremely uncommon with the fact we dont blame things on eachother.  But with dealing with my friends breaking up, I have been called to help out my best friend.  I've tried sending her inspirational little quotes, I made her a video, I text her like twentyfour seven always letting her know I love her, but I know she is still hurting, break ups suck.  Right now she is at the stage were she believes that its her fault the relationship didn't work, she believes it was because she wasnt "enough" for him.  Thats when I went all preachy.  I told her she was the most beautiful girl I had ever known, and that she was a divine daughter of God, and that if he didn't treat her that way, then he did not deserve to even be in her life.  I don't know if what I said had much impact on her, but it did on me, because I realized that I am a lot like her, that I blame myself for things, like how my old friendship went bad with my last boyfriend (I talk about him in a previous post) I have always just shrugged off the compliments that my boyfriend gives me, because i think he has to because he is dating me, but he sees something I can't see in the mirror.  He sees me, a daughter of God.