The height of MM in the comics isn't explicitly stated. Sometimes, such details are left to the imagination of the readers or might be revealed in later issues.
There are many novels that feature female characters in a non - erotic way. For example, 'Little Women' which focuses on the lives and growth of four sisters. It shows their dreams, relationships, and how they face difficulties in life.
The connection between two people makes a mm love story special. It's that unique bond that can't be easily defined. It could be a shared interest, a common goal, or just an indescribable chemistry.