Jealousy in a man can mean many things. However, the most common underlying meaning of jealousy as exhibited by a man is that he feels threatened. When a man sees another as a threat/rival and at the verge of getting your attention and love over him, there's a possibility that he may get jealous.
Jealousy plays a very important part in romance. It can bring out desire, attraction, and can make a guy want you more. If a guy likes you and sees you flirting with another guy, his jealousy will make him desire you more. As a result, he will try harder to please you.
Ironically, love is the most common cause of jealousy for men. Most men have a hard time accepting their potential partner's interest in others and their interactions with them. This jealousy comes from love and it can be kind of sweet and healthy.
If his face twists into an expression of envy or jealously, it's a pretty solid hint that he's into you. Usually, if a guy really likes you, he'll be possessive over you because he wants to be your one and only.
How do I make him jealous and confess his feelings?
Hang around with other guys and express your interest in one of his friends, to make him jealous. Jealousy will compel him to confess his feelings for you and make him realise that you will not always be available. You can always be direct and just ask him about his feelings for you.
Oftentimes, a guy may try to make you jealous because he feels insecure about your feelings for him. His insecurity doesn't make the behavior acceptable, but it does make it quite normal. His attempts at making you jealous might be his way of trying to capture your attention.
The closer he wants to be to you, the more he probably likes you. This body language is a minute way that guys go for physical contact. People who are just being nice don't want to get closer and closer to another person. Instead, they'll keep a safe distance and might lean away if you try to touch them.
You will often witness a spark in their eyes when they are looking at you or having a conversation with you. They will smile at you as if you are art personified. You can tell if someone likes you if you can sense them looking at you even when you are pretending not to notice.
When a guy likes you but is hiding it, he'll find reasons and excuses to talk to you. That way, he can use these instances as opportunities to get to know you better, but they're under the guise of him trying to get other information about a different topic.
When a guy gives up chasing you, it could be because he has discovered that someone else is into him. He might have grown tired of waiting around for you and found someone else in the process. If he has been avoiding your calls and texts and is making excuses he might be ignoring you for someone else.
A little jealousy is good for motivation, but a lot of it is bad for everything else. While the natural feeling of jealousy can push people to become better, the constant feeling of it is the reason people become pushed away.