Jiro and Aya

Jiro is your bestfriend and you are a boy your best friend is inlove with your girlfriend and he decided to steal your girlfriend away from you and what will you do? (Aya is your girlfriend that slowly start falling inlove to Jiro and one day you see Jiro and Aya going to a private place and you decided to follow them (your personaly is not intersted in romance you hide your personaly)