And you're not. At all

A tutor of mine has somehow developed some kind of phantom friendship between the two of us. My friend Beki just told me that she's just seen him and he asked her for my number so that "we can organise a drink"

He's 40, married and a bit of a dick. I see him once a week during one of my lessons and I've never really been particularly 'matey' towards him, and yet he's always displayed a ridiculous amount of favouritism towards me. A part of me wants to exploit this, but deep down I'm worried about encouraging somebodies warped intentions of grooming me, or something

So yeah. It's not rude of me to just ignore phone calls/messages in a situation such as this, is it?