not sure about where your question is coming from. Are you questioning the appropriateness of having lunch with a woman in relationship?

I admit I am iffy about this. I am aware my boyfriend has a great deal of female aquaintances most I wouldn't give two hoots if he was to meet for coffee or lunch. I would expect he tell me about it though. I admit I'd feel a bit hurt if he didn't.

I ask then, just what is her motive? Is this a secret meeting?