Promise?

Isabella or Bella never thought she would be one of those girls who sit around and search for her mate. After all she is dating the alpha of the pack and had a ton of friends what could go wrong. Well after her parents died a year ago she has been trying to find that missing part of her. Despite her thoughts against mates she runs into a problem when she meets the beta of the pack. Collin is everything Bella is looking for, even more than Jake had to offer. But will she sacrifice the alphas happiness for her own. And will she let her brain get in the way of her heart.