Have you ever had romantic feelings for someone and that person felt the same way about you, but nothing ended up happening in the end?

I had romantic feelings for this one woman and she also had romantic feelings for me.

But we couldn't get together at the moment due to how busy our lives were at the time.

We eventually lost interest in each other, and she eventually started dating and got married to another.

I sometimes wonder how different life would've turned out if we did ended up dating, what's done is done.