now they are arguing
What I don’t understand is why is she trying to justify Jose because that’s what it seems like she’s picking arguments with him trying to justify what she’s doing is OK again she didn’t even have to come back to the apartment she could’ve went to a hotel and have sex with old boy so why come back to the apartment with all that drama
Aderyn must decide to occupy the room. He is calm, in control, he must assert his rights. Period. (Google translation)
Hotels cost money when she can stop here Her name is on the apartment too, despite her tone of voice it seems she’s trying to be civil towards him
I think Aylin has more feelings for Aderyn than she cares to admit. you see this behaviour all the time where the girl (or boy) project their anger or frustration on the person they actually fancy, hoping to get some sort of response. Jerr148 hit the nail on the head, why come back to the apartment, why not go elsewhere if she wants to have sex? Because she wants to make him jealous!
sex with old boy 
Hotel costs money. The apartment brings money.
Especially when having sex with new ones, even now with drama.
I think she thought it was easier. To serve a person ice-cold, you really have to be freezing cold. Even though some may think she’s taking advantage of it now, maybe everything has always been planned that way. I think both were young and naïve.
They more or less thought it was just sex. You can make money so easily, now at least one has developed feelings.
Clearly leading this guy on.
If the guy had expectations, it’s pretty much screwed. I would leave the apartment. One angry girl and two frustrated guys. Wow
Patience is bitter, but its fruit is sweet
She is frozen queen!
That’s incredibly poetic! 
It will be rotten by the time he gets to it! 
Hey guy, go to Aderyn, it will be more fun with him! 
What an embarrassing situation for this guy. He’s the big loser of the night. 
I do not think 