The triangle gaze - note NOT stare - is a great way to gauge interest.
Looking into a persons eyes is a strong and powerful indicator of communication and interest. Swapping down to the mouth and back up to the eyes, works well from my experience. A couple of things:
- Don't look at the bridge of the nose as this can come across as a stare. A stare is threatening as opposed to a 'look.'
- To start, get your body posture correct (if your sitting on a date scenario). I like to tilt my head back slightly, lean back and briefly look into EACH EYE SEPARATELY. Don't try to look at both eyes at the same time. Swap briefly down to her mouth, then back to her eye(s).
- When I do this, I'm trying to gauge her interest. If she only looks back briefly, or takes a quick glance at me, she is just doing the same - testing the waters.
- The look should start briefly but as you listen to her, (you've asked her open ended questions right?), let her get the chance to look at you. As your conversation progresses, the looks will become longer, by each of you and this should indicate a level of interest.
- Glance away while you think of an answer, but don't look down. Always glance sideways.
- Also if you're looking at a woman across a bar for eg, if she looks at you then looks down,then back, that is interest. If she looks away in a horizontal plane,then back,she's not sure.
I studied quite a lot on body language for a previous job I had. It has been some of the best feathers in my quiver to date for dating/pickup.
I also highly recommend utilising your look tactics during day game. On the streets of NYC I had amazing results using this. Simply looking (in a non creepy way) into a woman's eyes on the street, instead of ignoring everyone as you walk around, is very powerful and can lead to great contact. As you can tell I find this topic fascinating and try to use it in business and for the bedroom.