Relationships can be complicated and it somehow sounds awkward that your friend would go-ahead to date or marry the man you left.
The lady said the guy was with her friend at first, she realised that they weren’t compatible with each other.
She waited patiently for them to break up, which they eventually did. The lady went to ask the man out and they started dating.
To cut the story short, they were so compatible indeed that they got engaged already.
Many people would have a different opinion about this. Some would say the lady has done something wrong. If she values the friendship between both of them, she should not have gone to meet the man.
The truth is that the heart wants what it wants. She made the move and they would be married soon.