Top Definition
A casanova supernova is a man, who gets with a girl or woman, cheats lies and uses them, yet thinks saying a few simple words will make them stay with him. some do, until they figure it out for themself.
" he cheated on me the night i was going into hospital"
"He must be a casanova supernova ! "
by SexyBrownEyedMissus May 07, 2010
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