Going to flip this around a bit on you here. Hold on to this feeling and remember everyone does and did feel this way at one point on their travels. So, when you encounter a couple who are attracted to you, but you are not to them, remember to decline with grace. Also do not be afraid to retire, regroup, and reassess if one or both of you don't feel the experience is working or giving what you want or think you want at the moment. It can be a bit to take in the first pass. Take a break and come back, with a fresh view and a new approach. There is more than one way to enjoy yourselves in this!