This word comes from the secondary language, and later many netizens began to imitate it, so it gradually became popular. Taking cp is equivalent to "dealing with someone". When you meet someone you like, you will feel that they are sprinkling sugar.
Cp is a common word, and it is widely used. For example, watching my family's Aidou and a star play lovers in a TV series will call them cp. In fact, cp is the abbreviation of English Coupling. When it first became popular, it was also used in the second dimension. In recent years, it has also been widely used in other occasions, such as the third dimension.