Do you ever meet someone and are bummed because they are completely unavailable but in another life you could have had a connection?

For example, just had an event for work, and I think there could have really been something between this woman and I... I wonder if she thought so too considering she sent me a completely unnecessary/personal follow-up about how the rest of my trip was/if I made it back safely. Our convo there wasn't exactly "professional" in tone anyway. I don't know how much to pursue a friendship here. She is married with children, so she's not available, and I am not going to get what I need emotionally in my life out of this. Maybe I'll just leave it up to her. She'll probably vanish like most other people do on me anyway, but oh well... C'est la vie..

Do you ever meet someone and are bummed because they are completely unavailable but in another life you could have had a connection?
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