When flirting with your ex, the last thing you want to do is appear down in the dumps and depressed about your life. Intrigue your ex by exuding natural self-confidence -- through strong posture, direct eye contact and an overall relaxed demeanor. Show her what she is missing out on by emitting a positive attitude both about yourself and about life in general. To flirt with her, make her want to be back with you, instead of just feeling sorry for you.
Everyone knows that relationships can be stressful and it can be all too easy to fall into the trap of letting yourself go and feeling depressed. This is no way to flirt with your ex. Quit crying and waxing nostalgic and go out there and do something about it. Start working out regularly at the gym to improve both your health and your appearance. Make a change to your physical appearance, from freshening up your hair to revamping your wardrobe. Shock (and fascinate) your ex the next time he sees you. He will likely be so curious that he won't be able to resist talking to you.
If you want to flirt with your ex in a sneaky manner, pretend you want to ask him about romantic advice "for a friend" of yours. Of course, he will probably assume that when you say "a friend" you mean yourself. This will pique his curiosity, and will also alert him to the fact that you are around other men. This might be able to get the flirtation vibes going because he will think about the possibility of you spending significant time with other men, and he will also wonder if you are romantically involved with any of them.
To flirt with your ex, praise her and make her feel that even though your relationship is over (for now, at least) you left on good terms and have respect for her. This might also remind her of all of the good aspects of your relationship with her, and encourage her to flirt back at you. Give her a genuine and sincere compliment, whether it's on the dress that she is wearing or a recent accomplishment of hers at work.
Teasing is a lighthearted way to give any conversation a flirtatious and fun vibe. When you encounter your ex, flirt with him in a casual way and be sure to avoid mentioning any heavy relationship baggage between the two of you. Avoid any touchy subjects and make fun of him for current things, such as his obsession with skiing or his penchant for corny reality television programs. Be sure not to hurt any feelings; just try to give the conversation a good-natured and relaxed feel.
Being a little tactile with your ex also can be an effective flirting technique. Accidentally brush against him as you walk by him. Give him a light tap on the hand when you're making conversation. Be sure to keep the touching brief and casual, however. Also, if he reacts badly to it, stop immediately. Respect boundaries and respond to the appropriate cues you are receiving. Chances are, he will take this touching as a signal to flirt right back at you.