What are the characteristics of a womanizer?

Womanizers often have no history of long-term relationships, and tend to be bad at communication—they force their partner to initiate most contact. He may also be secretive and never want to share anything; plus, he's probably a good stonewaller. Womanizers are very dishonest people overall, and are typically very good at what they do. So, you'll have to search extra hard to find physical evidence of their actions/behavior.