A broken heart is what happens when a love relationship is broken off.
Someone with a broken heart is usually depressed which means they feel awful and don't enjoy life.
To fall in love with someone can be a wonderful experience, with powerful emotions.
People in love often share their deepest feelings and emotions, which is intimacy.
（Being in love can blind you from seeing things as they really are，so it is easy to make a bad decision.）
To find someone attractive usually means there is a physical desire to be with them.
Physical attraction may sometimes lead to love, but in many cases it may only lead to a short term sexual relationship.
(Physically attractive people attract people of the opposite or same sex, depending on their sexual orientation.)
（Many women use makeup to make themselves more physically attractive.）
To flirt with someone means to let him or her know that you want to be approached.
Some people use their eyes or smile to flirt.
(If someone is flirting with you, they are coming on to you. You may reject their advance or accept it and begin a relationship.)
（The skill of flirting is something that comes naturally to some people，but for many people，they just act awkwardly.）
Jealousy is what often happens when two people compete for the love of the same person.
The one who loses maybe very jealous of the other, and try to break things up.
（If two men are rivals for the same woman，they may jealous or even hate each other because of jealousy.）
（Feelings of jealous may last for a long time and can destroy friendships.）
The emotions of love have inspired poets through out history.
Many women use make up to make themselves more physically attractive.
She broke his heart when she told him their relationship is over.
