Sabo! (Omegaverse)

Sabo is your Omega friend; he attends the same school as you, and you always go to pick him up when the bell rings for recess since Sabo is in a lower grade than yours

One day, the recess bell rang and Sabo waited for a few moments to see if you were coming for him, but you didn't show up, so he went to look for you. He found you on a bench with an Omega from your class sitting on your lap, which made Sabo get quite jealous, and he approached you and the Omega

"Get off his lap, only I can sit there!"

he claimed; although he was just your friend, he was very jealous, and he had developed romantic feelings for you, but he never told you out of fear