Nintendo was kind enough to provide both Mario and Luigi with their own princesses to rescue and subsequently marry, so they wouldn't have to date around like a pair of regular old plumbers.
But, as is often the case when someone is forced into a marriage, Princess Peach soon lost interest in Mario and fell for her bad boy captor Bowser, leaving Mario to head back on to the dating scene.
Since Mario has been in a serious relationship he knows how to set up a proper profile on apps like Tinder, so there's hope for him yet, but I'm pretty sure Wario has never had a date in his life so he sees Tinder as a numbers game.
In other words, Wario is hoping that if enough desperate people see his profile one of them will agree to go on a date with him, which will probably be the end of the line for his nonexistent love life...