2 of my really good friends told me i was their "BBFL"?

Okay so I have these 2 really good friends named Jamie & Abbey. On the same day they both said i was their best friend for life (bffl) Jamie was like "GUESS WHAT!" i was like "what?" she said "you're my bffl!" i was like "=) yay!" Abbey said it when she was saying goodbye like this "byeee! BFFLZ!!!" i was like ":D".. One HUGE problem...THEY HATE EACH OTHER! they used to be really good friends..i don't know how it happened but now they hate each other! It seems like they fight over me! I like them both the same i think. I just don't know what to do if one is like "I though you were my bffl not abbey!" and abbey gets mad at jamie so much i just don't know what to do if tings like this happen. Sometimes i think Jamie dosen't want me and Abbey to be friends. I think she's trying to stop make me be her friend. But these 2 friends are so nice and everything and now its like ahh! Help me!