Oh, i kinda feel this too. I know he will be like this. Grayson prob sleep around to test if that person is his fated mate unlike dane who sleep around with anyone just for fun even if its a married women.
I dont like either of this characteristics but I can prob say that dane have the highest chance of hurting someone.
Grayson never cheated on anyone though so how does cheating be justified and Grayson had relationships with consent and everything he might have hurt some people but I don't think Grayson deserved it because Dane knew lowkey that Grayson suffers from no emotions and stuff too so he could had been a better type of teacher and person for him instead of being mean and very cruel type of thing for him even when Grayson was such a Green Forest for Dane. I love Dane don't get me wrong my pfp screams I love Dane but in his story I def disliked Dane cause I hate the type of characters when in relationship says I can sleep with anyone and u can sleep with anyone u want type of thing.
He tried to, although we really don't know what would have happened if Grayson didn't stop him. If he really would have gone through or stopped at the last moment. That's something we will never know.
But the attempts were there, and it doesn't matter if it was a trial relationship or not, the moment he agreed he should have been faithfull or not agree at all.

Soooo as a novel reader, not finished yet, I realised how much i despise Dane