*The cell phone is a definite no. If he's texting, I just say "I can wait" and won't continue the conversation until he puts it away.
*If he doesn't pull my chair out for me or open the door for me, it's usually a sign this is gonna go bad. I used to be offended at those gestures, but I find (in general) guys who do those things for me treat me better than guys who don't.
*If he smells like alcohol or smoke
*If he brings up his ex (unless, for some reason, I ask)
*If he has a gold tooth or a grill
*If I look at him and just start to feel nervous like I should stay alert around this guy.
*If I'm thinking in my head, "Man, I shaved my legs
for this??"