What do you look for in a partner? What's puts you off? A survey published in USA Today indicates single women and single men have some very clear requirements, and definite "deal breakers" in their search for a potential partner. Teeth and grammar are high on the priority list for Both men and women.

For men a woman’s hair, clothes and tattoos (whether they have them or not), come next on the list. Women evaluate men on their clothes, hair and hands/nails.
Women place a premium on respect from a man. Men want someone they can trust and confide in. If you're "on the market", expect to be Googled.  Almost 40% would back out based on information they found on the internet. I have.  Speaking for myself, trashing your "ex" in social media is a BIG red flag.
Another common deal-breaker is significant credit card debt.