Racist parents and blackbf?

Me and my bf have been goin out for a week and im hopeing to hav my first date next week cause im out of town now. We have talked on the phone almost every nite. Im wanting to go roller bladeing but my rly racest gma and maybe aunt (my aunt wont let a black peison in her car) hes said he wants to kiss me n i can work that out cause of the booth they have in the rink. What do i do like as far as .like holding hands and stuff wher my gma would see me? And my friend who is 11? Im 13 Btw and i rly like him.