I'm removing the netorare tag from this because unless I'm reading this scene wrong it's not like she's dating the regular guy. She gave him an obligation chocolate and he's just reading a lot of meaning into it. Meanwhile she's obviously after the other guy. It's still sad don't get me wrong, but it's not netorare
No seriously, enough of that. This is not netorare, that's literally obligation chocolate for the shaved dude probably just an admirer, while the dark dude got the lover's chocolate. It's harsh for the dude but he ain't her boyfriend. Stop adding it back in.