If our arms touch and he maintains contact after, what does it mean?

While sitting in a meeting next to a man who knows I have very strong feelings for him our upper arms meet. He makes no attempt to move away and neither do I ( we actually stay touching until the end of the meeting). I'm married but not happily. He knows this and he knows how I feel about him. He occasionally rubs his jaw or nose during the time we are touching... what should I make of this?