Standard eye contact is polite, but courtship eye contact is a specific technique often called "The Triangle."
Before a word is even spoken, your posture tells your partner if you are emotionally available or guarded.
Courtship involves testing boundaries to see if the attraction is mutual. Body Language Secrets: A Guide During Courtship...
These are "displacement activities" caused by the nervous energy of attraction. If your partner is constantly fixing their appearance while talking to you, they care deeply about your perception of them. 6. The Feet Don’t Lie
Keep your "ventral" (front) side open. Avoid crossing your arms or holding a drink directly in front of your chest like a shield. Standard eye contact is polite, but courtship eye
Watch for "preening"—smoothing out clothes, fixing hair, or adjusting a watch/jewelry.
Most people focus on controlling their facial expressions, but they forget about their feet. Look at the direction their feet are pointing. If your partner is constantly fixing their appearance
Shift your gaze from one eye, to the other eye, then down to the mouth, and back up.