That new guy is a REAL ASSHOLE. The female thot teacher deserves him, someone who will probably cheat on her, probably get her pregnant, and then dip leaving her with the kid. I really shouldn't wish that on anybody but this trifling thot need to get some payback.
Ah, and yes, the MC is stupid, buy the FMC is no better (they both gullable too and deserve each other ... an eventual NTR waiting to happen). I'm just reading until the end ... even though it's becoming more garbage by the minute. The only thing saving this is that the female characters are WELL drawn ... yeet.