I'm the Mate of the Alpha's Girlfriend

Eighteen year old Peter is the Omega of the Kumori Pack. He finds out that his mate is someone he can't be with right then and there, due to her boyfriend. Her boyfriend isn't just anyone. No, he's the Alpha the pack Peter is in. How can he compete with that? Peter must do everything in his power to make his mate happy by either being her mate or becoming friends and see where that takes them. Will Peter's mate go with the Alpha or the Omega?