I know what you mean about not liking the registered names... my stallion is registered as QTPOCOS SONNY DANCER... seriously? A boy? Aww... c'mon! Lol.
Random Ideas... (very, very random):
Without An Obligation
On The Rebound
Compulsize Ladies Man
Something To Talk About
Compulsive Casanova (haha... for a real heartbreaker... I kinda like that)