I found your post when I was looking for answers to the same symptom; the feeling of warm fluid on my outer ear. There is no fluid, no pain or discomfort. The sensation passes only to come back again later.
This started when I was having an acupuncture session and though there was no blood from the needles on my ear, that's what I thought was happening. The sensation has returned several times daily since then and that acupuncture session was well over a month ago.
It sounds like your ear is draining. Did your Dr. say you had an ear infection? That could cause fluid drainage. Take care. Remar