Responses
I think you misunderstood. He doesn't like the best friend. At the flower part mc was looking back after Gido because he was proud that he finally could accept fully his feeling both the ones he HAD for Gido and the one he has NOW for the ML and that he didn't run away. The flowers were a beautiful symbol of acceptance and change.
I would 100% want to be in a relationship with ML. I would 0% want to be in a relationship with MC.
I like MC that i could admire and sure of themself, this one is not it for me. It scares me to be with someone like MC who likes someone else especially a best friend (he tells you not to worry about) despite being in a relationship no matter what you say. I get flashbacks from my past relationship. I give them 3 years and they'll break up.