Total Love includes:
Romantic Love: Those moments when you look into your Lady's eyes, your heart melts and you know that it is your destiny to spend the rest of your life loving her, honoring her and protecting her.
Physical Love: Those passionate, earth shaking moments that leave you breathless, exhausted, and wondering at the mystery of what just happened. (I'm old, but I remember.)
Playful Love: Those easy, teasing moments spent playing with the puppy, gently teasing each other and laughing at the absurdities of the world. Snuggling, always snuggling.
Companionship Love: Easy dinners together, planning the next vacation, discussing the last book you read, just loving the simplicity of being together.
Committed Love: Unquestionable support for each other against the difficult and often cruel nature of life.
And when you are old, gray you have all these wonderful memories to sustain you.
... and if one has all these components of the total package, why would they be tempted to stray. I could not.