
Nothing is wrong with the mc. The red haired was straight, then he suddenly like the mc. Of course the mc wouldn't immediately date him. because wasn't the red haired a straight man? Why did he suddenly fall for a gay man? Questions filled the mc's mind. It make sense that he doesn't date him yet. So he still sleeps with the dog guy. Dating Isn't that easy. Just enjoy the manhwa.

No it's okay :) like you said, people have their own things that make them stress. Manhwa's like this one can be pretty frustrating, but i think it's what make it good because it shows that the author is really bringing the characters to life, but yes you should drop it if it stress you out! Have a good day/evening/night! :)
Geez if you're even considering to date the red hair, stop sleeping with the other dude. It's not that hard, what the hell is wrong with the mc. So annoying.