Grandparents Dating?! Chuckie CLOSED!?

My grandparents had been married for about 30 years. They got divorced about 2 years ago and now they are sort of dating each other. They both tell about one another at separate times. My grandpa wants to get back together, but my grandma says "My CHUCKIE(vagina) is closed". I don't know how to react when I have my grandpa crying to me telling me he misses her and my grandma telling me the opposite. Im so confused. Thoughts about this would really help. Thanks!