But all too often, it's assumed that you can just let a casual relationship fizzle out and end without officially pronouncing it dead (a.k.a. Even though lots of people do this, it's not necessarily a good thing.
So do you have to actually break up with someone if you weren't in an official relationship to begin with?
Wozniacki, who appeared in Sports Illustrated's 2017 Swimsuit issue, shared a very picturesque photo of the two on vacation and called Lee "my love" in the caption.
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide—from Peter King, Tom Verducci, Lee Jenkins, Andy Staples, Grant Wahl, and more—delivered straight to you, along with up-to-the-minute news and live scores.
"How is dating her exclusively any different from calling her your girlfriend?
Or you could feel like the relationship just didn't really warrant a breakup.
Yes, but it's complicated, says Samantha Burns, LMHC, a millennial relationship expert.
"There are so many nuances to dating and entering into a relationship these days, that calling things quits before it ever really takes off can be a confusing situation," Burns says.
Last year, Russian police arrested two men from Smolensk who pretended to be young, attractive girls stealing the hearts of men in Moscow and then threatening and tricking them into sending large sums of money.
The criminals were found to have taken roughly 1 million Russian rubles (about US ,500) with this scheme.