She should actually thank him!

Kylie Jenner is known for her plumped up pout, and she admitted on last night's episode of Life of Kylie that a "boy" actually made her insecure about her thin lips and prompted her to get injections.

“I was 15 and I was insecure about my lips. I have really small lips. And it was like one of my first kisses and a guy was like, ‘I didn’t think you would be a good kisser because you have such small lips.’ But I took that really hard. Just when a guy you like says that, I don’t know, it just really affected me," she confessed.

"I just didn’t feel desirable or pretty. I really wanted bigger lips. I would overline my lips with lip liner just to create the illusion of bigger lips. And then finally I was like this lip liner isn’t doing it. [I] ended up getting my lips done," she added.

She didn't get together with Tyga until she was in her late teens, so all signs point to her ex Jaden Smith as the culprit. She should give him a cut of all her LipKit cash!