genuinely asking

I am not sure to tell anyone about this in rl yet.

My grandma died years ago, and my grandpa likes her a lot and hasn't gotten anyone new.He keeps telling me I'm his favorite out of my siblings (probably because I'm the most Asian-looking one) and that I am his wife reincarnated, that I look exactly like her. (I don't know if it's due to him being drunk; he doesn't often say things like this.) We barely even talk till now.I'm cool with that. But he keeps hugging and kissing me (on the mouth); he even opened his mouth. He told me not to tell anyone and keeps saying when we're alone he has something to tell me.Should I be concerned?