Why do we women do this? It’s because it’s a rather potent tool. When you evoke jealousy, what is universal is that you are in a state of insecurity. You need to test him as a man, his affection and the way he expresses it. If you attempt to ignite jealousy and your attempts are fruitless despite resorting to the extremity of your tolerance, then — unless the extremity of your tolerance is incredibly low — that tells you either one of two things. He either is completely under your thumb (complicated by the possibility of harbouring homoerotic desires of his own) or he truly does not care about you. In either case, it is a lost investment and he is not The Right Guy, in which case it is best to simply move on if that’s an option. The optimum situation is that you avoid being in a relationship where this happens in the first place.