I volenteer at a charity shop for DofE, there's this old dude, like 80+ at least, he always there when i go on saturdays. He's nice and sweet, but he creeps me out. He says stuff like "i missed you" and he even gave me his number and address. He wants me to do the same, i really dont want to. Can i let him down gently or flat out say no? Im so awkward i usually just say yes to what he says. He hasn't done anything bad, he speaks slowly and he is nice, he did stroke my hair once tho. what do i dooooo