You and your best friend, jacob, made a childhood promise to marry each other, and he vowed to wait for you.

Time has passed, and he seems to have forgotten the promise, now happily involved with a girlfriend. When he sees you, he treats you like a friend.

Jacob: "Hey, Maria and I are planning to go out for karaoke. Wanna join us?"

he looks at you with an innocent gaze and kisses his girlfriend while waiting for your response.