
So is this a love triangle story? Also how bad is it? Rage level, or not too bad?

Definitely not rage level(as of yet), um it's more of a love square, let me explain, Daon(MC) likes Jaemin (gray hair) but its seems like (tho not confirm) that Jaemin likes Soohyun (blueish hair) but soohyun obsessly loves Daon. Both jaemin and Soohyun know Daon likes Jaemin so they use that to their advantage. Seonghyun (ML) is kinda just thrown into the mix but he likes Daon. I read all the raws, It's going to get angst very soon but it's not very/hard angst as of yet, just decent angst due the relationships Daon has with Jaemin & Soohyun. Daon is complex (& scared) and put in a complex situation due to them so don't be to hard on him. Daon as of now cares for Seonghyun & is willing to go along with Soohyun so Soohyun won't do anything bad to Seonghyun
I know this long but I hope this helps u understand a bit more and why the series is called Secret Relationships

Is this worth reading? Also is this a love triangle?? Just from the cover...I wanted to check. Lol my heart can't take love trianglessss

Yes Heil, the god of Hell, is the end game. The white haired guy only inflict pain to our MC despite the love he is giving him and he'll betray him too that will cause a huge part for the mc. At first I thought this is a common jerk ML who will get a massive character development but it's quite refreshing to see a different outcome. The god of pain really live out with his title
Bruh... is it true he commits suicide?? WHY WHAT IS THE PURPOSE? Well good to know this story ended here..today..with a happy ending. Yay