Love is hard to hide, just as a flower can't hide its fragrance. When a person has affection for you, even if he tries to hide it, it will be revealed in his eyes, tone, and movements.
The first sign of liking someone is that he becomes very willing to share. He will be eager to share with you his joys and sorrows, his daily life, his dreams and hopes. His words are full of care and passion for you, as if you are the most important person in his life.
He will show a different face in front of you than usual. Maybe he is a reserved person in front of others, but he becomes warm and open in front of you. His mood swings will become more pronounced, sometimes happy as a child, sometimes melancholy like a poet. This is because he is able to let go of all his defenses in front of you and show his truest self.
He will show a sometimes cautious and sometimes confident side in front of you. When he likes you, he will feel inferior and feel that he is not worthy of you. However, when you respond to him, he becomes confident and seems to have the courage of the whole world. This is because your presence gives him the strength and confidence to know that he is loved and worthy.
Body language is also an important clue to whether a person likes you or not. When you talk to him, he will look at you intently, as if you are the only one in his eyes. His body will unconsciously lean towards you, trying to get closer to you. When you are together, he will take your hand or hug you, which is a clear sign that he likes you.
In short, when a person likes you, his performance cannot be disguised. From his desire to share, his sense of contrast, ambivalence to body language, he will convey to you his feelings for you. As long as you observe carefully, you can find these clues of love and feel the warm love.