someone who is interested in you will often see you, often in secret. He may try to see your eyes, or if he is embarrassed, look the other way if you notice it. To test his interest, look at his face for four seconds, then look the other way do not look too long or you will feel awkward. Then look back, if he keeps eye contact with you, he is interested in you. If his eyes look toward your mouth, he would be interested. If you feel you've kept eye contact for a fraction of a second longer than you normally do with someone else, or if he quickly takes his eyes off, then he has a feeling of being taken to you. On the other hand, if he breaks eye contact and looks the other way, he is not interested in you.
Happy is when we see the figure we love smiling, though only can see it from afar.