WHAT DOES THIS b.ody language mean from him?

he's black and i'm white...IT's a catholic high and majority white people but a few black people too....we really don't have racism issues...everyone is pretty tolerant and decent (except for the occasional ho but that's off-topic) soooo.... there's this black guy who is decent and nice...well he has some swag but that's cool...so today in adoration of the blessed sacrament (lol) i was kneeling really close next to him because of limited space and oh by the way we talk a lot...and he was kinda subtly rubbing his upper arm/shoulder against mine...and he's nice and stuff so i didnt really mind [even though it was supposed to be adoration!] so i just kinda let him.....WHAT DOES THIS MEAN??????????????????????