It's been a year since the royal couple tied the knot, and we haven't seen a single slip-up: No public tantrums, sloppy make-out sessions or tense moments. Can you say the same about your relationship?

If Will and Kate have taught us anything, it's that in public you should treat your partner like royalty, with respect and mutual support, couples therapy expert Debra Macleod observes.

"They are poised and present a united front in public, regardless of what conflicts might be happening personally. They do this because they value their commitment and they are looking at the long-term, big picture of their marriage," she says.

And of course, because gossip magazines would royally trash the royal couple if they didn't have a picture-perfect marriage. We so-called "commoners" may have far fewer eyeballs watching, but our imperfect relationships could easily become the subject of friends' and family's gossip as well.

She recommends every couple create a "public profile" -- i.e. have a discussion with your spouse around what kind of image you want to project to the world and how to reflect it. That conversation could cover how each person socializes in public, both together and solo, as well as public displays of affection.

And if you're ever unsure, just think: What would Will and Kate do?

Public Fights

What should couples do when private anger boils over into public life? Try to appear supportive in public and exercise self-control until you can work things out in private, Macleod suggests. Instead of screaming at your partner, take 10 seconds to quietly consider where they are coming from and nip a potentially nasty argument in the bud.

"This doesn’t just protect the privacy and integrity of a marriage, it also protects their reputation as husband and wife. It does no good to show the world your problems," she warns. "That’s even more essential for Will and Kate, as their fights won’t just be in front of friends, they will be in front of the world."

PDA

It took years before a photographer snapped Will and Kate kissing in public, and even now they tone it down.

Public displays of affection can be ridiculously adorable, but consider your surroundings and company, as what's appropriate changes with the setting. Like, for example, when you're on Buckingham Palace's balcony, in front of thousands of people... And the Queen of England. That's a strictly chaste kiss, no groping situation.

Inner Circle

Just like Will and Kate, "commoners" need to keep criticisms on lockdown in front of his/her spouse's "inner circle"; family, colleagues and friends.

"No doubt (Kate) has had to bite her tongue on more than one occasion when dealing with her mother-in-law and extended family. It is the same as a loving wife who has chosen to accept the idiosyncrasies of her mother-in-law, just to make life easier and avoid unnecessary conflict with her husband," Macleod says.

Going Solo

When Will or Kate steps out solo, they still don't step out of bounds -- at least, not lately, and definitely not since getting hitched.

"I would be surprised to see Kate socialize with opposite-sex friends, without her husband being present," Macleod says. "Common couples often make the same choice when they choose not to socialize with ex-partners or the swinging single secretary from work."

Whether or not you'll both make that choice, make your opinions known about what kind of behaviour (flirting, excessive drinking, etc.) is OK by you or over the line.

Support Each Other

If the royal marriage sticks (fingers crossed), it's because they support one another -- and it shows in public interviews, Macleod observes.

"I advise my clients to take an 'I’ve got your back' approach," she says. "If someone speaks ill of your spouse in public, you rush to their defence."

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  • Duke And Dutchess Of Cambridge: Their Marriage In Pictures

  • "Every inch the dignified Royal Couple de jour, Kate looks fresh, radiant and importantly, happy, while her handsome husband walks close by, their hands not quite touching, but their warm, intimate relationship clearly resonant despite the distance required by Royal etiquette."

  • "The couple look towards one another in harmony. William holding the umbrella with poise, protecting his beautiful wife from the elements is a moment of delightful chivalry. If only all husbands were like this! Yet Will too needs some support as we notice his hand creeping into his suit in that iconic Napoleonic gesture, that his father, HRH The Prince of Wales also adopted. Not surprising when all eyes are upon the most popular couple in the world."

  • "Another umbrella but a very different vibe. Here we see the couple at their glamourous best, glowing with the confidence of young love. Kate has a positive halo around her auburn tresses, shining with the knowledge that she is adored, not just by her lovely husband but also by the whole world. What is a little rain with so much love abounding? Will's smile says it all."

  • "Our Royal couple nestle in as close as they can get with decorum clearly being the only restriction that prevents Will from nuzzling into beautiful Kate's neck. Their body language positively pulses with a longing to turn together away from public gaze. His eyes shut reminding us of the constant exposure they must feel and the generous way they offer themselves to their public when they would really rather be alone and intimate, as do all newly weds, as signified by his hand hidden in his pocket."

  • "This photo is alive with the admiration Kate feels for Will and the way he can make her laugh, which as all women know, is the real key to their hearts. Whatever he has discreetly said (and it looks from her expression that it might be quite naughty) it has lit up her face and made her feel very much alive and in love."

  • "The way Kate looks at Will it seems as if they are not wearing hilarious white matching Stetsons and the whole world doesn't exist for her. Her look is intense, endearing and her lips are moving forward as if longing to make contact with his smiling face. He must be feeling fabulous, having his beautiful wife look at him like that while clearly sharing another moment of joy and humour, making a public appearance appear as a mere backdrop to the delight they share in each other."

  • "Will inclines intently towards his father, a quizzical look on his face, while Kate closely tucks herself in protectively behind his right arm. Once more the couple are as publically close to each other as decorum allows. The expression on Kate's face is interesting, one wonders what she is thinking, her mouth is somewhat pursed, as is her husbands, her eyebrow lifted in a micro arch, and there is a fierce intelligence in her eyes. Are they suppressing mutual mirth, or wondering just what is HRH on about? Kate certainly doesn't look as relaxed here as when she has her husband all to herself."

  • "Once again our Royal couple are tucked up together, this time over canapé's. Kate's expression rather suggests she can't face eating whatever she holds in her hand. She also looks a little sad in this rare moment of vulnerability. Will however, is munching away and hasn't quite noticed yet, but we know he will soon, as their free hands are soft and close by, always ready to connect with each other."