Even though they all are connected, they don't show much about their story(i mean dane and Grayson)
But they do make appearances in both kiss me liar and kiss me if you can .. in kiss me liar they don't show any of dane x Grayson story and in kiss me if you can too(till now).. eventhough they make individual appearances( dane was more of a cameo role in both, don't know if he will appear in kiss me if u can in the future), u can't read their story but can kind understand their characters that's all..
Still i recommend u to read all.. both are good to read and u can focus on this too.. I also liked the starting of dane x Grayson story too
I don't know about the satisfaction as we don't know how this desire me if u can story is( pretty sure Grayson is going suffer ) but we do feel hatred towards Grayson in the other story ( especially kiss me if you can) may be becoz of his condition, he is doing all that, still..
We can only know if we get satisfied when this story progresses

So can I read this first before kiss me liar and kiss me if you can? I’m rlly interested in Dane x Grayson’s dynamic sooo I wanna read this first, but I wanna know if it’s more satisfying to read this after reading the other two lol (〜 ̄△ ̄)〜