What is Mohan/Mohini's problem?

THey showed this M completely in bad light from starting!!......even b4 transition he was :1.this dumb idiot who fell 4 just anybody's words.....got trapped in room by classmates,got kidnapped,got tricked by Sid into performing dance in girl costume ( even got trashed 4 it,still trusting Sid??)2.Shameless brat: Aryaman saved M so many times-never thanked Aryaman, just like that came with K to Mumbai(Matlab formality ke liye bhi mana nahi Kiya),accepted gifts from Aryaman,never apologized 4 drunk dance (4 which K had to pay the price by signing divorce papers)3.Selfish: once he found about transition,M became self -centered...nothing and no-one mattered after that( K.her happiness,her married life ,her sasuralwaale....everything became secondary to M