Oh dear! I'm sorry if my joke came out wrong. And know I'm not judging. I completely get where you are coming from. It's natural to want sex when you have your partner around.
In fact, that's how I am. But with me, I get bored sexing one person for too long. For you, it's love that stimulates your desire. For me, it's just the desire to get off.
I wish we (society) are more comfortable discussing our sexuality, then we wouldn't be sensitive about how others see us. Don't take my comment too personal. There was no ill intention behind it.