A weird laugh? Terrible fashion sense? Horrible taste in food? What are the things that have you running for the hills right off the bat?
If they're not scientifically oriented and an agnostic/atheist. If they're not nerdy. If they use an iPhone.
An iPhone is a deal breaker? For real??
android for life!
The needy, the overly sincere, drama queens, the self-absorbed, the not very bright, and those without humor. One that l never figured out how to handle is telling someone who wears a perfume that you don't like, that you don't like it. A couple of times in my life l have met a woman l really liked but l couldn't tell them how much l disliked the scent they were wearing, so l didn't pursue the realationship. That is why l use all unscented products.
A few on the top of the list other than the obvious as to why we are all here on this site; I won't date or even consider getting involved with smokers or anyone that chews. Weed is fine but tobacco is out including cigars. Bigots/sexists with narcissistic behavioral patterns. Dumpster supporters as of now until that shit storm blows over. Overweight men to a point where its affecting their health. Poor hygiene. Last but not least is a temperamental, bi-polar, know-it-all control freak.