Cancer is the sign in the zodiac of nurturing and of giving. So basically the cancer person is very giving in a sexual way, very affectionate, loves to be cuddle and coddled. The part of body that cancer rules is the chest and the breast area.
In a certain way it relates to being a mother because I've always said that all Cancerians have a mothering instinct, whether or not they're male or female. But particularly in sexual positions anything that you as a Cancers lover can do. Around the chest and breast is very, very stimulating, deeply affectionate for them and it arouses their passion. Let's say you have a cancer male lover, it is recommended that you lightly rub your fingers over his chest area. You can pay attention to the nipple area.A lot of kissing in that area is something that arouses a cancer male. Females of course are very turned on by having their breast touched, fondled, kissed in general payed attention too. In cancer women particularly they do have beautiful decolletage, beautiful chest area and very often very curve. So this is an area to pay attention to when your making love with a cancer.