THINGS you can LEARN about the GUY:

HIS CHOICE IN UNDERWEAR
Tightie-whities are the sign of a man who's proud of his equipment and how he uses it. The tighter they are, the more eager he is to show you his sexual skills...and the less able he is to attune to your needs. Men who prefer donning boxer brief might be less showy in bed, but they're more willing to keep the focus on you. And as for a guy who goes comman-do? He's a free spirit who's comfortable with his body.
HIS HAIR
Hair is to guys as body is to girls. Think: Samson's power from his strands. The more hair a man has, the more confident he is. He might also be a little short on sensitivity.Men with great hair usually only know what it's like to be admired, not criticized. They're used to getting what they want - when they want it - and are much more likely to give others a hard time for not living up to their own standards. As you might guess, if his hair is thinning out, his ego is most likely whitting down, too. But he's probably more empathetic.
HIS BIRTH ORDER
The oldest child is usually a responsible, take-charge kind of guy. If you're babe is the baby of his brood, he's likely to be creative and a little rebellious. As for a middle man: He's a sensitive soul who needs loads of attention.
HIS SEXUAL STYLEYou can't judge a guy by one night in the sack (they get first-night jitters, too), but a couple of booty calls can offer plenty of personality clues. If he's a 10-minute man, he's a Type A personality and very results - oriented, which can make him a little selfish...and not just in bed. On the other hand, a man who lavishes you with affection and spends hours hunting for your hot spots wants to connect with you on a levels and is generally a good communicator out of the bedroom as well.
IF HE'S LEFT HANDED
Right-handers make up the majority of men, so that reveals very little. However,date a lefty and you may be dating an artist at heart. Left-handed people process more information on the right side of their brain, which lends itself to creativity.
NEAT FREAK OR MESSY MAN
A guy who puts his dirty socks in the hamper is one thing; a guy who color codes them in his drawers is something else. This man is way too fastidious to have fun and he'll expect you to be just as neat. A mildly messy man is looser and more open-minded. But if the inside of his shower has never seen a scrub brush, he may be immature or just plain lazy...and do you really want to see how his sheets are.
WHAT TIME HE PREFERS TO HAVE SEXYou're dating a spontaneous go-getter if he's bent on a.m. booty. While his high energy makes him a blast, his need for instant gratification might grate on your nerves. If he only wants nighttime nooky, he's probably a romantic at heart but a little tame. Don't expect the Kama Sutra, but prepare for long, sensual sacks session.
HIS BAD HABITS
Gambling men are risk-takers, which can make them a lot of fun. But their over - the top optimism that they'll come out ahead makes it difficult for them to face reality. Hard-core smokers tend to be anxious, so it can be hard to pin them down for couple-time. And if he's a boozer, he could be hiding his insecurity behind his buzz.