Person 1: hey did you know so-and-so and i are dating?
Person 2: wow....OTP OTP I SAY U GUYS ARE OTP
Kid 1: hey did u know so and so and i are dating?
Kid 2: wow ok...OTP YOU GUYS ARE OTP
OTP defines One True Pairing, which in turn gives the definition stating that a couple is a favourite couple. That they're meant to be for each other till the end of time. In other words, they are endgame.
Natalia and Yommel are OTP.
"I love you so much. You're my OTP,"
One True Pairing. Usually in fandom where you think two characters would likely to be a great couple and are made for each other, like soulmates
Example:
Person 1: Oh my god Draco and Harry are so OTP
Person 2: I know right, they are born to be with each other
Otp or on the phone
Ashley: Hey, can you be otp?
Jenny: yeah in a little bit tho