After the boy broke up with his girlfriend, he called himself a clown. What does he mean?

If a boy calls himself a clown after breaking up with his girlfriend, it means that the boy has been greatly hurt in this relationship. He felt that he paid a lot and got little, and he didn't let the other party respect him. He is like a buffoon, making a fool of himself and paying the price. He is regretting that he has paid so much!