Which one matters more to you for choosing a partner?

Both with priority on the face, you can work out your body. You also see the face all the time, the body only in the intimate moments. However choosing a partner who doesn't have a sexy body (to you, not necesarily what society feels is sexy) is like choosing a car without an engine to save the planet, you won't get very far and you'll need a good car anyway. The same way if you choose a partner who's body doesn't do anything sexually for you, you just chose a friend except by tricking them that they could be your partner you set yourself up to also lose a friend. A good relationship doesn't survive without a healthy sex life and choosing someone that is not sexy to you means you will have a poor sex life. Later on when your primary goal of feeling loved is fulfilled your instinct will start screaming that there is something missing and you'll know what it is.