FWB relationships often hover in a gray area between friendship and romance. Unlike a full-blown romantic relationship, these liaisons usually lack a strong emotional bond, but that doesn't mean they're devoid of feelings. 

Many people enter FWB arrangements seeking both physical and emotional closeness, albeit in a less intense form than a typical romantic relationship. But it's not uncommon for one partner to develop stronger feelings, hoping to transition the relationship into something more profound.

That’s what happened to the characters in the Kunis/Timberlake and Portman/Kutcher movies. But the odds of an IRL happy ending aren’t quite as good.

Keeping the lines of communication wide open and checking in on each other's feelings and expectations is a must, but the person you need to be most honest with is yourself. What are you truly hoping to get out of the arrangement? Are you willing to sacrifice your friendship if things don’t work out the way you want?

However you choose to proceed, be sure to stay true to your needs, be upfront with yourself and your friend, and brace for unexpected plot twists as you navigate this setup.