Hurmat-e-musaaharat

For hurmat musaaharat to be established, is it necessary that shahwah be felt at the exact time of touching. Now suppose a man touches a female. He did not intend to touch her with desire. But their hands were together for a few times. At this time the man felt lust. That mans, shahwah was not present at the beginning of the touching, but it came when the hands were in contact of each other. Does it establish hurmat musahara?