If you resided in the "Multiverse" you probably would have responded differently, but living in this world you tend to respect the "Bro code."
A close childhood friend used to date this young lady, who let it be known that she wanted to spend some "alone time" with you after they broke up.
Out of respect for your friend (in spite of the fact that he told people he didn't care who got involved with her after they broke up) you never responded to her advances.
Years later you found out that other guys in the neighborhood didn't think the same way and she apparently had multiple suitors (unbenounced to him and even a few he would see on a daily basis).
PS. She favors this young lady.