What should I do if my boyfriend sent pictures of himself in exchange for some pics as well?

The girl was not someone he knew .. He claimed that she was some kind of a porn star.. And he also said that his friends had all sent pictures as well. We talked about it and he said he realized he was only giving me half of a commitment, while he had tears running down his face. I know I will not break-up with him because I'm not the type of person to run away from problems by taking the easy way out.. What should I do!

why would anyone chose to send them? and further more I'm not concerned with what a porn star does with her life because I already know by her occupation that she has no respect for herself.