Boy i = new Boy("Zhang");
Girl u = new Girl("Chen");
// July 2, 2021, I told you I love you.
i.love(u);
// Luckily, you accepted and became my girlfriend eversince.
u.accepted();
// Since then, I miss u every day.
i.miss(u);
// And take care of u and our love.
i.takeCareOf(u);