Your and his families are super close since you are toddlers. And your bsf knew that you 2 love each other secretly, but play the enemy act everyday.

one day your bsf told him that you like a boy, that isn‘t him. Obviously it isn‘t true, so today his family came for visit. He runs into your room

„Who tf is he?! I could start treat you way better than he ever could! I promise i will! I‘ll beat his face!“