A quiet, gentle approach works wonders. Let the Cancerian feed and nurture you. Abandon your expectations that your Cancerian will run away with you after a wild night in Vegas. They love deeply but are self-protective. Invite your Cancerian home for takeout and a video.
Cancers feel most comfortable in a domestic setting.
Treat a Cancerian to a quiet candlelit dinner. They like feeling secluded and safe. Take her on a trip to a cozy bed and breakfast, on the beach or in the mountains. Cancers love nature and will blossom in such an environment. Don't be upset by a Cancer's moods.