It's a debatable if it's consensual on Josh's part. It was mentioned before that whatever he feels is related to the fact that he is marked by Chase. That is his alpha. It's natural/psychological instinct to want the alpha that marked him.
Josh is so horny all the time that I feel sorry for Chase's dick
The first time they slept together was also consented and led by Josh as he was only one conscious. Lol Josh is even a hidden yandere for Chase :))
I didn't say anything about the first time.
It'll be shown here much later on but Chases family is quite bad. They haven't treated Chase at all well since he was a child. Not to mention Grayson gaslighting Chase into believing that he spent his first rut with a dog, which made Chase fear dogs an ungodly amount.
Also before anyone questions whether it's forceful or consented on Josh's part whenever anything sexual happens, yes it is. The amount of times he thinks about kissing Chase again or if he should give in and experience the night they had before again are to many. But he doesn't force anything on Chase either.