Okay I really love this idea cause it can cause some really wholesome moments but
Ghetto doesn't like being touched- like ever, even if it's a small hug but-!
The only person he let's hug him out of the blue or even hold his arm is Nick, Ghetto trusts nick enough to not cross any lines or make Ghetto uncomfortable.
Plus He understands that Nick does have trouble talking about things like his mental health or other things, so when Nicks having a bad day he knows to go to ghetto for a hug.
It also can make Ghetto feel better to incase Ghetto stuff having a bad day as-well.
Nick and Ghetto both feel safe with each other. :3