The Big Brother Crush

I know what you might say, I'm the big brother and totally in charge, right? Well, turns out there’s someone who's always been just a bit younger than me, and they've got this thing going on that makes my heart race. It’s not like it matters anyway; we’re siblings at the end of the day. But sometimes, when I catch them looking at me with those wide eyes...I feel like something needs to be said. So yeah, anyone else ever felt this way about a sibling? What's up with that?