BTW on the romantic Cindy path, if Ian tells Cindy he trusts her but then doesn't text her at the beach, she won't text Ian either. If Ian tells her she's playing with him, he won't have the option to text her and she will text him by default. More proof that on the "you're playing with me option" Cindy is more invested in the relationship.
If anyone still thinks Cindy cheats on Ian regardless of this option, then you're essentially saying EK programmed in all these variables, micro interactions, and different branches just to merge them back into the same route right after. Not only would it be bad writing, but it would also just be a massive waste of time for EK and the player.