Much enlarged pupils unconsciously signal sexual interest! Watch his eye pupils. If they are large like these, you are doing great! Keep up the good work.
While you and he are talking, watch his eye movement pattern. Normal eye movement pattern is a way of governing whose turn it is to talk, and it establishes who is dominate or equal status. Watch for these patterns in the guy -- and your other friends:
- Normally, the speaker looks briefly at the listener (usually about a second) then looks away repeatedly. Eyes are not normally focused on any object, they are just taking a break to let the mind focus on making conversation.
- When looking away to his left, he is retrieving memories from the past. When his eyes glance to his right, he is creating or fabricating future "facts". He may be lying, but this is not always true. He just may be very creative and the information is not from past history.
- When finished speaking, he will alway looks back at you and drop his voice on the last words. This signals that you can now speak. The ratio of speaker-to-listener time provides another clue for evaluating him. The time should be about equal, unless one of you is shy, secretive, or a poor conversationalist.
- Normally, the listener watches the speakers face, at least most of the time, looking for facial cues about emotional content. By watching the speaker's face the listener shows interest and searches for how the speaker feels about the topic. Voice changes and facial expressions provide valuable information for evaluating the speaker, discussion content, and status of the relationship at that moment.
In spite of these normal rules of conversation, compared to women, some men tend to dominate the conversation, interrupt more, speak half as many words a day, make less eye contact, do teasing to show interest, and are more sarcastic and argumentative. This just provides a clue to how educated and socialized such guys are.
The thing for you to watch for, and not do, is to stare continuously at him while he talks. This implies you are so fascinated with him that you can't take your eyes off him. That may make you appear desperate to get a man.
In normal conversation the listener watches the face of the speaker more than the speaker watches the listener. So it is normal for the guy to glance away from your gaze periodically but hopefully not always at other women and not at your breasts. However, because men have a lot of natural hunter instincts still in their DNA, their eyes are quick to glance at any woman moving in their line of sight. (And if your breast cleavage goes nearly to your navel, he is never going to look at your face!)