My favourite girl is that Nika since she is the only one who doesn't smoke but she is also very hot.
Gaz jumped to 2nd place for me because i sense some romance with her. It would be cool to turn her from bitch to decent girl. I mean, purpose of most of the adult game is that to corrupt girls but i like when we can turn "already corrupted girls" to the good path. For example, Jessica from GGGB.
Maureen and Mom are the 3rd and 4th one. I mean , they are both hot. However, the conversation between Mc and these characters are far away from realism. Both MC and Maureen are obsessed for the Mom but Mom is somewhere between lust and morality. I dunno about this.
I didn't like Heather from begining because of my personal preferences. On the other hand, she is one of the forbidden fruits of game. Therefore, it would be cool to get to know her intimately.
I really really hope you add some "REAL" romance with one of the girls. Maureen is more like friends with benefits. She doesn't care who MC fucks as long as he returns to her at the end of the day. This is not my thing at all. The closest girl for romance path is that Gaz right now.