Running From My best friend .... Who happens to be my mate

first story that isnt fanfiction so please be gentle

Teaser:
I ran plain and simple. Her brother tried talking me out of it the entire trip to the airport. "Sis, you know that you don't have to do this right?" Caleb said as we parked and sat for a few minutes. I sighed, but not for the first time that night. My parents and the Alpha knew that I had to go. They understood, well for the most part. " I can't do it Cal. You and I both know that he comes home in a few days. I can't watch him claim some other girl as his after falling for her. I might come back one day when I'm strong enough. But right now, I just can't." I said as a few stray tears fell down my face and I looked at my brother and more fell. While absent mindly playing with my diamond S necklace that I never took off. "You don't think that you're his mate. So, you are going to just leave without telling Storm or even seeing him. While leaving the rest of us to deal with the aftermath when he loses it." Caleb said looking at me with a grim look. Almost like he knew that I had to get on the plane. "I'm not his mate. I don't deserve to be his mate. And I'm not good enough. Sadie proved that.