I completely approve of being sexually adventurous with your partner. With some patience, communication, and practice, anal sex can be an exciting way to enliven a relationship. You cannot have too much lubricant, as the anus and rectum do not have the natural lubrication and elasticity of the vagina.
Ample lubrication helps prevent tearing and allows the penis to move smoothly, minimizing pain.
This can increase your level of comfort and ability to relax during the process. Have your partner go slow. You can start off by having him use a finger to loosen you up until you are comfortable . Make sure his fingernails are clipped and no jewelry is worn. Try different positions.