Sometimes "going out to eat" is as much about hte company as about the meal. Did you ask if he meant right then, later that evening or even on a future date? Better than saying an absolute "no" would be to sya yes in a manner that sets some boundaries: "well, we just ate an hour ago, how about we meet for dinner tomorrow evening at 5?" Or, "gee, we just ate--maybe we can get together for dessert & coffee?"
I don't know how not telling other family members about her is going to have any impact--seems like if they already know her, they know what she is like.
I don't know how not telling other family members about her is going to have any impact--seems like if they already know her, they know what she is like.