If a man denies having a wandering eye, refers to Brad Pitt's performance in "Legends of the Fall" as "cinematic genius" or professes to love wine and cheese parties as much as you, one of two things is happening: He's either gay or he's lying. AOL Health asked Elina Furman, author of "Kiss and Run" and Michele Weiner-Davis, author of "The Sex-Starved Wife" and "The Sex-Starved Marriage" to weigh in on why men sometimes keep things from their partners and what that means for a relationship.

My hair is as thick and as luxurious as the day I graduated high school.

Multiply the amount of time you spend staring at your pores by ten. That's how much some men obsess over their thinning manes. "Men don't want you to know about any of their vulnerabilities," says Weiner-Davis. "It's a sign of masculinity."

I know you would never fake it.

Whether it's facing financial pressure with aplomb or satisfying you in the bedroom, men feel pressure to live up to society's definitions of masculinity. "Men often compare themselves to other people and to their own idealized definitions of what a masculine guy is all about," says Weiner-Davis. They feel like they need to measure up, and when they don’t, "it's pretty scary for them."

What woman in the thong bikini?

Sometime it's hard for a woman, let alone a man, to keep from looking at that bronzed beauty sunbathing on the beach. "It's part of human nature," says Furman. "We are all attracted to beauty. Most of the time we can't stop our own reactions when we're looking at women and men." When it comes to sexuality, men are not only more visually oriented, but they're also more likely to deny a wandering eye when confronted. "It's too bad," says Weiner-Davis. "It would be better if they would admit it and reassure their partners that it’s just looking…and isn't going to lead to a breach of trust."

Honey, you have such superb driving skills I don't feel the need to wear a seatbelt.

Ladies: How many times have you gotten behind the wheel only to have to pull over blocks later to let him drive? "Across the board, all men secretly think that all women can't drive," says Furman. "It's a control issue, and it's hard to give that up." With that said, it really comes down to personality type. Even women have trouble giving up the wheel if they have a commanding, type A personality.

Brad Pitt and George Clooney's movies are cinematic genius.

Really? I would think this one's a no-brainer, but here it goes. The only Brad Pitt movies a man would truly classify as cinematic genius are "Se7en" and "Fight Club." The only reason he can recite all the lines to "Legends of the Fall" and "Troy" is because he knows how much you like the, um, cinematography. See? We all tell little white lies once in awhile.

What puffy under-eye circles?

Men notice the lines on their face just as much as you do, even if they don't admit it. "Men are vain," says Weiner-Davis. So it's no wonder that the percentage of men who have had plastic surgery is up 17 percent from 2007, according to the American Society for Aesthetic Plastic Surgery. Surgical procedures, such as liposuction, eyelid surgery, rhinoplasty, breast reduction and hair transplantation, increased 5 percent among men, while nonsurgical procedures, including Botox injections and laser hair removal, increased by 21 percent.

I love wine and cheese night, too.

Most men would rather crack a cold one and watch the game in a ratty pair of sweatpants than go to your best friend's for fondue. Hey, that's okay. "If we were to marry our clones, life would be pretty boring," says Weiner-Davis. But that doesn't get men off the hook totally. "Good relationships are based on mutual caretaking," she says. Men and women need to take part in activities that interest their partners, even if it doesn't necessarily interest them. The key is being good-natured about it and really participating, no matter how many times you rescue a soggy bread-cube from Swiss cheese oblivion. "No sulking," she adds.

I'm not hurt, just angry.

When a man throws a tantrum or storms out of the house, more often he's feeling hurt or dejected instead of feeling real anger. "Men have a whole lot easier time being angry and expressing anger than saying 'This hurts,'" says Weiner-Davis. "They feel far too vulnerable.

I don't care what you think.

"Men really, really thrive on and need their partners’ approval," says Weiner-Davis. They hate to be criticized or feel shame, especially when their wives aren't happy. "When you say 'We need to talk,' they feel shamed and blamed, because they really want to be doing right by their partners," she says.

I need to go golfing, bowling, or [insert requisite man activity here] to work on my game.

The reality is that many men take up time-consuming hobbies, like golfing or hunting, simply to get out of the house and away from their partners. "Men have more independent needs, and women are more relationship-oriented," says Weiner-Davis. So if a man's kept on a tight leash, it shouldn't be a surprise if an excuse to get out of the house is masqueraded as perfecting his golf game.

I'm not a crier.

While part of this may be true -- some men (women, too) just aren't criers -- men aren't made of steel, no matter what they want you to think. "One of the mistakes women make is they say to themselves, 'Men don't have feelings. They don't feel like women do,'" says Weiner-Davis. "Which is baloney." Men are often raised to believe that crying is shameful, emasculating and just not done in public, or private, but that doesn't mean those emotions aren't lying beneath the surface. "It must be tough having those feelings and feeling like there's no one you can talk to," she says. "When men feel bad it must be pretty lonely."

Primary breadwinner? Piece of cake.

Just because he's the primary breadwinner and likes to have control of household finances doesn't mean he's not totally stressed out about it. Men are worried to death about losing their jobs, especially in this economy, says Weiner-Davis. Getting laid off is devastating to anyone, but in terms of self esteem for men, "it's overwhelming."

I thought you were thinking that.

While most men want to please their partners, that doesn't always mean they're successful or even that they understand what it is their girlfriend or wife wants. "Women will say things to men, like, 'I want to make love tonight rather than have sex,'" says Weiner-Davis. "Women think they're meaning something when they say that, but they're not. Men don't get it. They may act like they do, but they don't." Men respond to action-oriented words, so if you want a more positive result, try saying, "Give me a kiss when you come from work" instead of, "You never pay attention to me."