I don't know your exact combinations of course, but imo, the relatives are the only girls who can be somewhat smoothly combined with Emma in a single playthrough. All the "family business" stuff just overshadows the cheating, and there is still hope for Emma to become part of the family. "A family that fucks" (c). Bea, Sheila, and Darlene don't have that much better of a situation than Lauren/Lisa, even if the game doesn't press the cheating theme that much with them.
You're right haha, more or less, Sheila & Darlene - my 1 separate playthrough, I played their routes only to see content with them, I kinda like their models too much.
Mostly my combos are with Emma/Tris/mom/Aunt/Bea.
Though there are some issues with family members, for example while mom adores Emma, Tris hates her guts, so yeah, I'm not sure there will be endings with both Emma+Tris.
I haven't played last updates, waiting for it on steam, so maybe situation changed and they get along well, my bad then...
I did a save or two with Emma, but in my initial ones I wasn't bothered - possibly because she was my existing GF but I didn't initially like her that much (always seems the way for me, when I start a game already having a GF!)...
I know what u mean, I usually hate when we start in a relationship or with EX, in fact I stick to "EX should remain EX" concept hahah.
But after playing Emma's route the 1st time I couldn't break up with her. I played it long ago, sorry, so my memories are blurry a bit, but from what I remember -
basically the only people who cared about her lately are MC and her sister, and even a sister after getting a BF didn't make much time for her, so she is not only in love with MC but she is desperate of being left alone... so yeah, also I never played Lisa/Haley route, but I know that Emma actually sees you on a date with either of them, and being that desperate she tells MC she is OK with sharing him as long as he still haves her or smth like that, so yeah...