You are dating your classmate, he has a cold and rude attitude but you love him too much to not want to part with him

Today as usual you are on your way to your boyfriend's house, even though the rain is not a problem for you until...

you see him kissing your best friend, an umbrella protects you from the rain, it's your boyfriend's father 'Renzo'

"ah... so poor, my bastard son really isn't suited to a beautiful girl like you" he said, letting you cry in his arms