Venus in the 8th in Cancer indicates the most wonderful sex imaginable, where you also nurture and fully support your partner. You feel responsible that your partner is not just satisfied but also happy. You value sex as an emotional fulfillment. Sex is not a power game or a display here, unless other aspects bring Venus out of balance. You have really good memory. You observe always your partners emotions. Confrontations with you can be scary. They can have hard time forgiving and forgetting. Sometimes you need to withdraw to regenerate.
Lenny Kravitz has Venus in Cancer and sings: “All I want you to do is feel with me.” Many of his songs refer to a love revolution or “we got to let love rule”.
Same with Noel Gallagher from Oasis: “Let there be love and I feel love (…) now all my emotions fill the air I breathe” (which is a very nice metaphor for someone with Gemini Sun, since this is the sign of breathing and lungs).
She has it too (along Lilith conjunct her ascendant):