didnt trust the MC who already went beyond to get him to tolorate her and trusted a 'divine doctor' out of despararion to heal his legs when MC was falsely accused.
when she ran from ML cuz she couldnt stand him (for a good reason)
even went behind MC's back to appease the ML by using her name to 'cheer him up'
excluding the obligatory delicious jealousy/punishment arc
I personally think that that MC fell for the ML because he (ML) accepted his body as it is. The MC has always been ashamed of having both s*xes (look up Inters*x) and yet ML accepted all of him and fell in love 1st. I don't know if the author did it on purpose but they wrote a story with body acceptance for an MC who always considered himself weird.