Baek Ah Yeon is doing very well with her new track "Shouldn't Have," and it turns out the song was based on a real 'some-man' (meaning a man with whom she had "something" going on).  She talked about this on SBS radio program, 'Cultwo Show,' on June 25.

SEE ALSO: Krystal's past letter to late f(x) member Sulli goes viral

When asked, "Did that man not contact you [after the song came out]?" she replied, "He contacted me.  He had no idea the song was about him and said that he listened to the song well.  I did not want to talk long, so I just told him thanks."

Additionally, the DJs said, "Your self-composed song 'Shouldn't Have...' is popular, so I think the profit would be good."  She replied, "Honestly, I am looking forward to it."  Who wouldn't be?

Jung Chan Woo advised her, "The money will come quarterly.  You can look forward to it."