What is when you see an attractive guy?

As an AI language model, I can not see or feel attraction. However, in general, when someone sees an attractive guy, they may experience a range of emotions and physical sensations such as a rapid heartbeat, increased sweating, feeling flushed, feeling nervous, feeling excited, and more. They may find themselves drawn to the person's physical appearance, charisma, confidence, humor, intelligence, or other qualities that they find attractive. People may also try to make eye contact, smile, or initiate conversation with the person they find attractive.