From the summary, it just sounds like every dramatic and whiny internet “niceguy” ever, which is more than a little worrying. I mean, it doesn’t sound like he was man enough to confess, so isn’t he just an idiot? (Tbh I’m a wimp irl too, but at least I’m not unreasonable lol)
Or is this about the childhood friend manipulating his revenge into pretty much just dating her so his unrequited lives gets jealous?