I Cheat On My Husband

I've been thinking about cheating on my marriage. Why? Because I have a 0 seX life and I am quite frustrated. But I'm sane enough to understand that I would be risking everything wonderful I have. From the outside I have the perfect family and husband. They love me with all their heart in spite of my own shortcomings.
It's not that I am in love or even looking for love . I have love. But what I want is just physical.
I'm so confused.