not entirely sure but no close relatives of spinosaurids had feathers so it's most probable they didnt. also im pretty sure the protofeathers it would have wouldnt even help it in a semi-aquactic environment
as any big herbivore, its probably very territorial and aggressive
you probably wont be able to be friends with it because its brain is very small
if you got stuck with it, you'd either be smashed by its feet (in case it couldnt get you with its tail) or be thagomized (in case it could get you with its tail)