I've Become a Genius Actor - Chapter 43:

The Cambrian Explosion, now the largest life science puzzle…

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

IntroductionQiankun Wenqing Valley: After Tang San successfully defeated the God of Destruction, he planned to take action himself and begin taming Huo Yuhao...Suddenly, a mysterious black hole appeared, sucking all the creatures from the Douluo Continent and the God Realm into the plane cracks!Then, a comparison live broadcast appeared, revealing the vastly different lives of two Huo Yuhaos!Huo Yuhao in the Original World: As a child, he was bullied by the Duchess and Dai Huabin. During his time at Shrek Academy, he was deceived and manipulated. Even though he had a girlfriend, he could only look at her but never touch her! His surname was even changed in the finale! Controlled by Tang San like a mere pet, his life was nothing but tragedy.Huo Yuhao in the Parallel World: From a young age, he took control of his own fate—beheading the Duchess, defeating Dai Huabin, and escaping the Duke’s palace with his mother! He saw through the corruption of Shrek Academy in time and led everyone to flee together. As an adult, he took revenge personally, killing the scumbag Duke White Tiger! He destroyed the seal Tang San had placed on Wang Donger’s body, allowing her to give birth to a child, and when Tang San came to settle the score, he cut him to pieces...Original Timeline Huo Yuhao: “After comparing myself with him, I finally realize what a failure my life has been. I want to be like him. I refuse to be a coward any longer! Tang San, die!”Disclaimer: This is translation

The year he was fifteen, Ling Ke realized he was gay, and that he fell in love with a hot guy the same gender he was! Ling Ke spied on the other’s online friend group, payed attention to that person’s every move, and privately, started his fanatical fanboying actions. Unfortunately, the hot guy he liked was someone who changed girlfriends like he changed clothes, a pretentious and straight male.

A few years later, Ling Ke and the hot guy he was secretly in love with got into the same university and became good friends. In order to prevent his beloved from hating him, Ling Ke repressed his true feelings and forced himself to pretend to be a 24k, pure gold straight guy.
……

Having high-spec looks, Qi Feng was a networking expert, but in order to preserve his all-around shining and popular hearthrob image, he always hid his true sexuality, that he was gay. He got himself (fake) girlfriends all throughout school, literally playing himself into being branded as a skirt-chaser.

Until one day, he met his true love. The other looked delicate and gentle, cold and out-of-reach, as if the ideal lover he’d dreamed of in his heart.

Except, there was just one thing. That guy also looked completely straight……

In short, this is the love story of two scared, in-the-closet gay guys pretending to be straight while mutually trying to feel the other out.

- Description from Novelupdates