D., author of Happy Together: Creating a Lifetime of Connection, Commitment, and Intimacy.

"Is it a test run to see if the relationship is a good fit, with the option to bail if it isn't?

Most of the steamiest sheet twisting you've done over the course of your relationship was planned, anticipated, and orchestrated.

Did you and your guy flirt your way through a romantic meal? And planning becomes even more essential the deeper you get into a relationship.

Discuss your future together to make sure this move is a stepping-stone and not some sort of temporary or circumstantial solution, says Cloke. Right: A recent study from the University of Iowa suggests that casual sex sometimes evolves into a committed relationship. How do you boost the odds that your fling will turn into something more serious? Despite how intimate your first date was, resist the temptation to see him every day and sleep over every time you hang out.

RULED OUT: A no-strings shag can never turn into something meaningful. According to our research, a significant percentage of current relationships began with nonromantic sex," says study author Anthony Paik, Ph. "It takes time for a relationship to become real, and if you see him constantly and keep it all about sex, you will create only a false sense of closeness," says Marshall.

Virtually unchanged from when it was a working plantation, you will find authentic sharecropper shacks, the original cotton gin and seed houses and other outbuildings.

You will glimpse plantation life as it existed only a few short years ago.

"Spontaneous sex is a myth," says Laurie Mintz, Ph.

D., author of A Tired Woman's Guide to Passionate Sex: Reclaim Your Desire and Reignite Your Relationship.

We live in a world of constant upgrades, but for some reason, many couples are still following the 1.0 version of love advice. "Playing by specific rules can make you less likely to pay attention to your own inner voice and experiences," says Bethany Marshall, Ph.

D., author of "Deal Breakers: When to Work on a Relationship and When to Walk Away.

According to the most recent findings from the National Center for Health Statistics, a cohabiting couple has the same chances at a happy marriage as a pair who don't share an address before tying the knot.