You remind me of myself. Mine are now in high school -Fresh and Senior. They leave for a while but they'll come back. Senior already showing some signs of improvment.
I used to tell them that there would come a time that they wouldn't want to hunt and fish with me. They'd say, "Ahh dad, no way." I followed that with telling them they'd get past it and be back.
Now I tell them, "You're gonna hug me and tell me you love me again when you're 21 yeah." They say the same, "Ahh dad, no way."
I still go hug and kiss them good night nearly every night. I think sometimes they're playing oppossum and just faking sleep.