How it happend

*Derek POV *
Do You know what happens to your mind when you see your mate get killed right before your very eyes? No well let me tell you
- you go  crazy
- you start to have flashbacks of how they died in your mind
I know this because of experience my mate stiles, god he was so perfect, mind you I didn't think that at first. But no one ever really does until they have slipped out of your has quicker than sand . It all happened when I was out Patrolling my borders ( you know what normal alphas do.) he was just an omega and didn't have a pack he looked carefree and he tripped I thought it was Hilarious but I had to stay in alpha mode. I told him to shift he Obeyed . We were talking but I kept on saying to him you can't be my mate I pushed him up against a tree and shouted at him saying why are you my mate all I herd was him saying sorry I could smell the sadness coming of him in waves stepped away from him. I wish I just stayed were I was cause if I did stiles would still be alive but I didn't. I zoned out but he kept on saying sorry  all of a sudden a Woshing sound came past me ears it a minute to figure out what that sound was but I was to late the arrow had already imbedded it self into my mates chest right near his heart the arrow was covered in wolfsbane so it only to a few minutes for the wolfsbane to reach his heart .
The pain on his face appeared when he crashed onto the ground I wish I could take it alway. I dived after him only to catch him in my arm he already stated to feel cold Now I'm the one saying sorry at that point I couldn't stop the tears from Streaming down my face even at his death bed thought he was the most beautiful person I could ever see even with black blood coming from his mouth and black blood Oozing from his chest he was getting paler by the minute I wish I could just take all his pain away. At that very moment he died in my arms and I wish I could all just Erase the words I said to him and go back in time just to save him.