The next time you see her walk up to her and ask her to stop flirting with you. Tell her you are taken and you can no longer be with her. Tell her in the past you loved her but not anymore.

Get out of here she has a boyfriend and she is not interested in me. Still go ahead and do it. She will think that you are crazy but she will know one thing that you love her.

She will start fighting with you insist that she stop hitting on you fight back a bit by insisting she stop flirting then break it off tell her you are busy and walk away.

Charles Pisano
ifoundyou.com