Responses
Still she doesn't need to sleep in the same bed with him. She's rich and could have sleep somewhere else.
She purposely text him at night. She is totally psycho.
beta
So I think base on the recent, I gather my thoughts and come to the conclusion that neither the girl is trying advantage of ml nor ml having dirty thought with girls nor something happened to them...
I think since the ml is so drunk that the purple haired girl help him to go home but since the girl didn't know the address maybe she decided to take shelter him somewhere he could comfortable sleep to..
And about the memories of that girl about ml calling fl's name maybe that was the time that the girl trying to help him uncover as the alcohol made him hot and uncomfortable and maybe the trying to help him comfortable by removing clothes....
As you can see there's no trace of the girl's clothes on the floor and so maybe nothing happened to them