Are You Gay?

My sister who is a sophomore in high school has fallen in love with my childhood sweetheart in elementary school. My brother accidentally finds out. What should I do? "Did you see that? That boy with the white glasses, he's from our class." "..." "Hey, I'll ask you this time, can you not tell mom?" "..." "Brother!!! Xuan Rui and I are in true love, don't break us up!!" "... I have to meet that boy on Sunday, and the information tells me." My brother is really sultry and a fake hooligan, my sister is fake smart and a real noob. The chaotic life of puppy love...