Girls, would you be upfront with a guy about friendzoning him?

This girl and I were childhood friends. When we were both 15, we told each other about our respective feelings, talked about a future together (kids, marriage, etc).

We both come from strictly religious families, so we decided to stay low for the time being and come out later.

Eventually, she friendzoned me. She didn't tell me about it though and for years she acted like nothing had really changed (while flirting with me slightly as well as with other guys).

At first I thought this was just wrong. Cooler head prevails, that's why I am trying to figure out whether anyone else would have acted the same and if it as bad as I thought it was.
Girls, would you be upfront with a guy about friendzoning him?
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