YESYES he definitely loves to touch his antennae bc it makes jeongnarp flustered lol he'd probably be very endeared by the fact gnarpy is shorter than him and they probably match obnoxious clothing pieces sometimes (we shall not forget jisvngs watermelon undies) . I think hes one of the first ones who would be interested in jeongnarp Sexually bc he'd be down to fuck an alien (especially when they're cool like he is. jsvng thinks jeongnarp is very cool!! and he thinks often about how hard it must be to literally be on another planet with no way to get back and be forced to assimilate with no resources. he cares abt him a lot too💜)