A guy who is only out for number one and who can't be bothered with caring about anyone else's feelings but his own isn't a guy you want around for the long term. We're talking about men who are rude to wait staff, don't tip well (or at all), who are quick to toss out negative or derogatory comments about others and who generally act like they're the alpha male in every room they are in. Confidence is one thing, but a huge ego that leads to unkind or selfish behavior is a major red flag. Walk away. Or better yet, run in the opposite direction.
Why it's a bad sign: More often than not, a thoughtless individual will remain that way. Unless you want to be constantly horrified (or at least annoyed) by his behavior, it's probably a good idea to move on from this not-very-nice guy.
He hasn't introduced you to anyone
If you've been dating for a while – long enough that you've invited him out with your BFFs and there really isn't any question about whether you guys are "together," but you have yet to meet any of his friends, consider it a sign that your new love might not last. We're not here to burst your bubble, or to freak you out – maybe he just doesn't have any friends (which, come to think of it is also a pretty bad omen), but it's just kind of strange to be dating someone and not be introduced to anyone he hangs out with.
Why it's a bad sign: It may be natural to spend most of your time as a tucked-up twosome in the beginning stages of your foray into couplehood, but there comes a time when meeting the people he holds dear is an important part of moving a relationship forward. So if he's keeping you and his friends and family separate, it could be a sign he's just not in it for the long term.
He's overly flirty
Flirting is mostly harmless. A giggle here, a wink or touch on the arm there – we all do it and as long as there's no intention behind it and you're not leading anyone on, friendly, flirty behavior doesn't pose a problem. Some guys are flirtier than others, but it can be frustrating if your guy goes a little too far and looks to be enjoying his interaction with other females a little too much. If he's touchy-feely with other women, leans in too close or otherwise acts like he's single whenever a member of the opposite sex walks by, you could have a problem on your hands.
Why it's a bad sign: You may not be looking for a marriage proposal, but it would be nice if the guy you're with isn't a shameless flirt. As we've already stated, if there is no intent behind his actions and he just has a playful, flirty personality, than maybe there's no problem. But if you're uncomfortable with how far he's taking his flirting and he doesn't seem to care, he likely doesn't respect you as much as he should.
He doesn't tell you anything
One of the best things about meeting someone you hope is more than a hook up is getting to that stage where you can open up and start sharing details about your lives – from what makes you happy to future goals to childhood memories. But if you're the only one doing the sharing, and he never seems to open up about anything, you should be asking yourself why. Not everyone is an open book and it could be that he just likes to keep his cards close to his chest until he feels totally comfortable, but you shouldn't feel like you know nothing about him other than what brand of boxers he wears.
Why it's a bad sign: Worst case scenario he has some serious skeletons in his closet that you do not want to hear about (and that could send you running) or more likely, he's not feeling as into the relationship as you are. And even if he is totally into you, how will you ever get closer if he won't tell you anything?
More dating tips & advice
Where have all the good men gone
What your attraction to bad boys really means
Date night conversation killers