Never trust a guy who wears too much Axe. He clearly doesn't like to use a toothbrush or deodorant and doesn't shower after the gym. Oh, don't even get me started on bad breath, how can you not smell yourself? Everyone else can.
Don't trust a guy who thinks kissing isn't cheating. If you can get herpes doing something, it's cheating.
Don't trust someone who still keeps in close contact with his ex/exes. He's not just "checking up on them." He's thinking about them naked, sexting and poking them on Facebook (and probably real life).
Don't trust a guy who says he needs to figure out his life at the moment before he makes you his girlfriend, but keeps hanging out with you and then some. Just don't. Move on because you don't have time to waste. You're only wrinkle free until you hit 30 and then it's all down hill from there. You will be sipping wine spritzers in the back of a bar while all the older men hit on your sister, who is in college.
Don't trust a guy who never carries condoms because he thinks women should handle it, he hates wearing them, he's too broke to buy any, blah blah blah. Yes, it's the 21st century and everyone should "pitch in," but jeeze, if you're having sex, be prepared and be responsible.
Don't trust a guy who is afraid of camping: dirt, bugs, peeing in public, and not showering? Who are you?
Steer clear of the guy who sends his food or drinks back all the time. He will never be satisfied.
Don't even think about hitting on the hot guy who didn't open the door for you, let you sit down when there weren't empty seats on the train or pick up your book that fell when you're hands were full. He's probably an asshole and that's not all he won't do.
Don't trust a guy who orders a bunch of drinks on your dollar. I don't know what crazed fantasy world you're living in but hearing that there's an open tab is not an invitation for your belligerence.
Never trust a guy who tells you (his girlfriend) he got a girls number when he was out with his friends. Yeah, she's totally going to help him with his thesis statement. Cough, cough.
Don't trust a guy who says he ran into an ex and is going to have dinner with her just to catch up. Unless she's his babies momma and they're discussing child support, he's for sure not going for endless soup and salad.