Hi Emilia,
Yes, there are a good number of people on dating sites who think about the ones that didn’t work out. Oftentimes, it’s because it felt like a connection was possible with the person at the early stages of getting to know them.
When that connection doesn’t happen, there is often a residue of disappointment that is left behind. The person was so interesting and yet, something was just missing that kept the romantic connection from happening.
Being a people person yourself, it is easy for momentarily thoughts of these people to come into your head, especially in moments where you wonder if you are ever going to find someone you truly connect with.
When you find yourself missing the person to a small extent, it’s the sense of nostalgia and the idea of “what could have been” that instigates that feeling.
You are not alone in this and it isn’t really a “problem” per se. Just make sure that you spend a lot more time focused on the present than on the past. It is in the present that you find that special someone that connects with you, not in the past.