11 Things We Learned About Marriage in 2013

From the most stressful year of marriage to the most popular day for infidelity, here's what we learned about marriage.

From surprising new links between dieting and infidelity to awkward post-baby sex, we learned a lot about marriage this year. Here are some of 2013's craziest, most enlightening stories about fighting, cheating and long-term love.

It's Official: The Most Stressful Year of Marriage Is...
A new survey showed many couples hit the wall around their fifth anniversary. Hey, competing career demands and raising little ones definitely aren't easy tasks! The good news: Making it through the seven-year itch is usually the key to a long marriage.

Why It's Good to Fight in Front of Your Kids
Exposing your kids to minor disputes can actually help them learn healthy conflict resolution. According to researchers, "constructive" arguments can increase a child's emotional security -- so go ahead and let him have it for forgetting to unload the dishwasher again!

'Honey, I'm Home!': More Men Than Ever Are Stay-at-Home Dads
More dads than ever are staying at home, and that's pretty awesome. SAHDs are more likely to pull their weight when it comes to housework, actually doing more chores than their working partners. Score!

It Gets Better! Married Couples Fight Less as They Age
Older couples are much less likely to fight than their newly wedded counterparts, according to new research. Older spouses typically avoid toxic subjects to make sure their remaining years together are as pleasant as possible.

Man Realizes How Great His Wife Is...While Under Anesthesia
This is the cutest thing ever. A woman filmed her husband waking up from surgery, and basically got the sweetest compliments ever while he was still a little out of it. Example: "You're MY wife? Dang! How long? Have we kissed yet? Oh my god, I hit the jackpot!"

10 Things I've Learned About Love After 10 Years of Marriage
It's okay to be boring, laugh at yourself, and eight other things every couple learns after hitting the 10-year mark.

The Number of Siblings You Have Can Affect Your Marriage
Do you have a huge family? Good. The more brothers and sisters you have, the less likely you are to get divorced, according to a new study. Each sibling decreases your odds of divorce by 2 percent, so be grateful for all those times your older sibs ganged up on you! Those conflict resolution skills you learned could be your ticket to a long-lasting marriage.

Cheat on Your Diet -- Or You Might Cheat on Your Partner
Successful dieters are significantly more likely to cheat on their partners, according to new research. And no, it's not because of your rockin' new bod. Exerting so much control over one area of your life can lead to a little less discretion in, um, other areas. Who knew?

Not in the Mood Post-Baby? Don't Worry. He's Not Feeling It Either
Turns out making love post-baby can feel like a real chore for both mom and dad. All that stress and lost sleep takes a toll on your man's libido, too!

Some People Can't Let Go of Their Phone Long Enough to Orgasm
So weird but so true. Apparently, 9 percent of adults use their smartphones during sex. Because you know what's really sexy? New Twitter followers.

Today's the Day That Moms Want to Cheat on Their Husbands
Moms are most likely to cheat on their husbands on... Mother's Day? According to a survey from Ashley Madison, this is totally true. Word to the wise, dads: Don't ignore her on her special day. She'll get even.

Carina Belles is a contributing writer at iVillage. Follow her on Twitter, Instagram and Google+.

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