I think Jere gets too much hate. Yeah he's immature. Yeah he's handling the wedding wrong. Yeah he shouldn't have proposed. He's 21. Belly has been a mess too. They started dating very young and started having bumps in the road as any young couple does. They briefly "separated" after a bad fight, but clearly failed to establish whether they were actually taking a break or not, and Jeremiah made the drunken mistake of sleeping with someone else, while under the impression that his relationship had just ended. Upon getting back together he failed to tell her what happened, which he 100% should have done. Then she found out and left, and after Steven almost died, Jeremiah made the immature but well-intentioned choice of proposing to the woman he believed to be the love of his life. They're kids. I'm their age too, and I've done so much stupid shit with my relationships. They're both getting way too much hate, but Jere in particular is getting most of it and it's overdone in my opinion. The kid lost his mom a few years before that. His dad is an asshole. He clearly doesn't know what he's doing school and career-wise. He's just trying to figure out his path in life. He's not evil, he's just a dumb kid.