Hello, I need help. I already finished reading this korean bl and I just forgot its title....

Hello, I need help. I already finished reading this korean bl and I just forgot its title. So, I can remember was that the bottom was actually a beta at the beginning but as the story progresses he became omega but he hid it from his childhood friend which is the top. The bottom worked so hard to hide the fact that he became an omega because he knows for a fact that his friend "top" is sensitive to the pheromones of omeags and has been traumatized because of this. The story ended with the omega becoming pregnant and them living together. Please do help me huhu. Thank you so much