Lobe, or ear. No problem if you are tempted by a couple ears funny and cute and you are interested in fishing excitement of hearing it through the instrument. But what would happen if the he becomes uncomfortable? Do not just because of these trivial events into chaos sex, or destroy the atmosphere that has begun to heat up.
If he does not want to say the reason why not, then do not be in force! Maybe he did not want anyone else to say, including you, too, he wanted to keep it alone. Look at yourself, there must be certain areas in your body that makes uncomfortable when touched or stimulated.