Well, you can confront her. But she is 19 and has the maturity level of a fussy toddler. You can allow her to go on bad mouthing you, and ignore it. Anyone who would listen to her lies is obiviously dumb, and eventually she will get caught in a lie. Of course there is always the silly idea of "revenge." But your not looking for that, your looking for vindication.
Vindication- (From Webster's) Justification, defence, exculpation, from or against accusations, imputations, ect.
To vindication yourself in this manner, befitting that of a DJ. (Because revenge is often childish, and would make you look just as infantile as her.) I would humbly suggest you seduce her best friend, the one who she tried to use to show you the picture. Why you might ask? And further more why should seduce this girl she has done nothing wrong? Think of it this way, if she didn't want you to see the picture, and knew it was an immature thing, then why did she tell you about it? Anyone with eyes to see things, would know that even the very idea of a picture exsisting of their ex kissing another would cause a prick of jealousy to occur.(Not saying that you are, but most guys would be unhappy with this) Maybe there is no picture, but she wanted you to think there was. In fact maybe to implant the idea that she is having a "happier" time with this fellow. Her hope was to make you think about and grow jealous. So if you wish it would be just of you to use the very vehicle of which she tried to bring jealousy to you, to be the very one you send to her. So that she knows you are the man, that nothing bothers you, and her friend will have no longer what she has.(Now if the friend is ugly or not up to your taste, then don't do it. Further more it is far more mature to ignore her and move on. Because all she wants is attention and by ignoring her you cannot have what she desires, and it takes little work to ignore someone. Your best course of action is to not seduce her friend, look at all the work involved. When you can easily ignore her, her desire to make you jealous will eventually ruin her relationships as each successive male realizes why she is using them.)
-Grey Fox
