Ok here's one from me.... I have to warn you though that you need quite some time to do this.
First, make peace with her then make her feel that you really love her. Spend some quality time but DONT ever forget that you are in for revenge this time and not love. When you think she's falling into you again, have sex with her somewhere. Then tape it ... do some pretty hard core with her ... i mean real hardcore where you have to spank her and let her drink your cum or something like that ... but make sure that you cover yourself with uhm, leather stuffs to make it more kinkier ... then break up with her.
Now, the second part. You said you think that she's going back to this other dude. Well, send him the tape. And see just how it goes ... no worries as you have your face covered with the leather thing
