is it love??? part 3 (All BLs have at least 1 problem)

Been a while since I shared, actually it's only been a few days. Anyways, parents are out on vacation (won't tell us where since they want to give us surprise souvenirs) and leaving my and my stepbrother. If you guys didn't know this, me and my stepbrother (who I call Satan) are dating, now you know. Anyways, it's just me and him. Me, him, and his hand trying to hold mine and wrap around my entire fucking body but I'm just so damn nervous and shy to actually agree with it. Wow. I feel like a girl going out with her first boyfriend (no offense, again ladies). But then again, he IS my FIRST BOYFRIEND. I've been straight all my life, now here I am, dating my first guy. My stepbrother, no less. How do BL main characters handle this anyway?

ANYWAY, I have a fuckin problem and I need help. (I would write it in Wattpad/Fanfic format, but I need help right now)

I saw Satan (stepbrother) hanging out with this girl 2 days ago. I didn't much of it at first. BUT THEY SPENT THE WHOLE DAMN DAY TOGETHER YESTERDAY AND TODAY?! Like what the fuck. I seriously asked him what he wanted to do yesterday but Satan told me that he was going to meet a "friend". YEAH A "FRIEND" WHOM HE SPENT 2 FULL DAYS TOGETHER WITH. I don't want to misunderstand but this is just stupid depressing for my weak heart who couldn't even handle getting rejected by a girl I loved back in elementary. I'm a guy getting jealous at a girl for touching MY guy. Okay, can anyone tell me what to do? I'm planning on following him tomorrow, assuming he's ALSO GOING TO MEET HER AGAIN. Looking for answers on this site seems pretty dumb, but some of you guys are actually smart. And I need your intelligence and wisdom o' mighty internet strangers. If you want to contact me more, my DISCORD is raphael#6900
(P.S my birthday is coming soon on 8/29)