Women will sometimes try to bait you into violating social norms so that they can reject you legitimately. Don't take the bait. For instance, if someone is rude to you, don't be rude back to them. That makes you a 'social violator'. A woman can reject you if you do this to a friend of hers, or even someone she doesn't know. Another example: if a woman's friend runs over while you are talking to her and they scream and hug and start talking between themselves ignoring you, then they have created a new shared interaction without you. If you stand there like a dork, you feel stupid and start to panic. If you bust in, in a reactive way, you become a social violator. The social pressure is building on you... "I can't leave and I can't stay". You eventually walk away with your tail between your legs.
The solution, Alpha's way, is to interrupt in a way that follows social norms by saying "Uh, introduce me to your friend, it's the polite thing to do." This is friendly and also demonstrates a level of dominance and leading.