He broke it off because he know's that as a man he couldn't give you your needs emotionally, physically or mentally from a long distance. Men tend to connect physically first, so if they see something they like it's only nature like to go after it. That would hurt your feelings if you found out that he was seeing someone else. So to save you time and savor your feelings it's best that they break up with us in situations like this just in case of future mistakes. That way no feelings are attached
_lonely_lady