unkeepable
Those found unkept. Someone who is dishonest, not loyal/faithful, liar, deceitful and cheater. If you find yourself in a relationship with a person possessing these qualities which are not favourable, then hopefully you take off your rose coloured glasses and discover that they are essentially unkeepable.
Jane says her new boyfriend has small man nuts because he is a lying cheating sack of poop which makes him unkeepable. They broke up.