OK, I admit that if defining him was so damn easy, I would have put out the perfect ad and found him years ago. What I have learned is that men are like food.  There are so many flavors and ways to prepare it that it is hard to know what you like before you actually taste it. However, one bite of something you dont like and you know it right away. Well, not that I am a negative person, but I know what I dont like. I  am, however, open to trying a new flavors to find those that I do like.  So with that in mind, maybe I should reverse engineer this problem.
 

He is NOT:
 a man with no shared interests with me
 a man over 44
 a man under 35
 a  mean guy
 a cheap guy
 a dull guy
 a womanizer
 a con man
 a commitment-phobe
 a control freak
 a misogynist
 a SNAGS (Shallow New Age Guys)
 a guy who isn't great to my  kid
 a guy who live in his van
 a guy who live with his parents
 an  abuser
 a premature ejaculator
 a guy who lies
 slime
 a compulsive gambler
 a stupid guy
 a workaholic
 a weirdo
 a smelly slob
 a drunks
 a mama's boy
 a druggy
 a retiree
 a guy who can't get over his last love
 GU's (geographically undesirables)
 a  guy serving time
 a guy with more than 3 kids
 a married man
 a  gay man
 a seperated man
  a guy who need his green card

also, "potential" is a word I have a real problem with. What you see is usually what you get.