Stargirl - Martian Manhunter

Since Forever Evil(JLA) until now in Justice League United , Stargirl and Martian Manhunter seems always care for each other. So the question is thus Martian Manhunter fall in love with Stargirl, or is this a type of father-daughter relationship or this is just becoming best friend ? Discuss

They have a father-daughter type of relationship

Father-daughter.

seems like father-daughter he doesn't really even have a human form and still seems pretty distant