On the subject of the 5 year old & the Grandmother..
5 year old children can't really distinguish that the word 'girlfriend' means a female in a relationship.. they just say it because they think its means a female friend. Hes seeing it as friendship & most likely thinks dates are more of a friendly thing.
I have no input on the sex in relationships thing.. My relationship involves alot of intimacy so I'm pretty biased on the topic
