The Love Hypothesis

AHHHHHHH. I don't even know how to rate this. I've put 3 stars but is it?!?!?
I ABHOR communication problems in books. Like Why!?! I almost DNF'd this multiple times. The FMC is an impulsive liar to an extreme. She literally just lies to everybody because for some reason that's easier than just telling the truth. I'm so irritated.