The mere fact that you are unsure and are asking for assurance to go ahead should tell you to listen to your gut feel. Instinct is seldomm wrong, you are aware of the flirting (so difficult not to in this arena with such close contact and feel-good hormones being produced. If you are someone special to him, trust me he WILL make the move. Resist the urge, enjoy and treasure the dance and time with him it is something so special in its own space - dont spoil what you currently do have ... trust me i know what you are feeling.