Increased blink rate - When a guy is attracted to you, his blink rate may increase by up to 50% as he tries to make more eye contact.
Subtle head tilts - A guy who likes you will often tilt his head slightly to the side when listening to you, showing he's engaged and interested.
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Mirroring your movements - If he subconsciously mimics your facial expressions, body positioning, or gestures, it's a strong sign of rapport and attraction.
Foot-pointing - The direction his feet are pointed can reveal his true feelings.
If his feet are aimed towards you, it indicates you have his attention and interest.
Eyebrow raises - A quick, unconscious raise of the eyebrows when you make eye contact is an instinctive signal of interest and attraction.
Puffed-out chest - A man who is attracted to you may subtly puff out his chest to appear larger and more physically dominant.
Fidgeting with his collar - Playing with or adjusting his collar can be a subconscious grooming behavior when he's trying to make a good impression on you.
Pupils dilating - Our pupils naturally dilate when we look at someone we're attracted to, as a physiological response.
Angled body posture - If his body is angled or leaning towards you, rather than facing you directly, it indicates comfort and interest in your conversation.
Frequently checking his appearance - Discreetly adjusting his hair, clothes, or other grooming habits can mean he's concerned about looking his best for you.
Nervous laughter - Exaggerated or nervous laughter when you interact can be a sign he's trying to make a good impression and connect with you.
Prolonged eye contact - Maintaining eye contact for several seconds longer than typical can communicate deep interest and attraction.
Pointing his feet towards the exit - If his feet are pointed towards the door, it may mean he's not as interested and looking for a way to leave the interaction.
Increased vocal pitch - A guy's voice may become higher-pitched when talking to someone he's attracted to, due to physiological arousal.
Frequent glances - Stealing quick, repeated glances in your direction can indicate he's having trouble keeping his eyes off of you.
Preening behaviors - Smoothing his hair, straightening his tie, or other grooming adjustments may be subconscious attempts to look more attractive.
Leaning in close - Reducing the physical distance between you can be a sign he wants to get closer, both physically and emotionally.
Sudden shyness - A usually confident guy may become uncharacteristically shy or awkward around you if he has developed feelings.
Playful teasing - Light-hearted teasing or joking around can be a way for a guy to flirt and test the waters of your mutual attraction.
Protective gestures - Placing a hand on the small of your back or other gentle, guiding touches can indicate a desire to be physically close and protective.