then, you are screwed up big time..
run away from them like you've never run.. can't help..

just kidding.. ;)
if they're so close to you, it should be lot easier to talk to them.. hoina ra?
or are you little reserved type of family member.. dunno.. I've some cousins who don't open up easily.. dunno whats going on in their heads..

just open up, approach, and tell things in a way where they don't feel bad and you also happen to say your thing