*Kinda spoiler-ish* it does have a happy ending
Can you spoil me if he gets mad when he finds out
Well Felix is kind of a himbo lol he doesn't really realize it's him, he suspects he's an omega but he doesn't put two and two together. Then sh*t goes down for a different reason and Felix realizes it in the middle of all that so he doesn't really have time to be mad until everything's over. He's angry but forgets about it when Isaac goes into heat in front of him lol
Sigh this dude
Pleaseee, I want this to have a happy ending, but he hates the “omega” from that time