Suzanne Collins' novel The Hunger Games is full of surprises and plot twists. In the interview with Caesar Flickerman, Peeta reveals that he has a crush, or a love interest from District 12. The information intrigues both Caesar and the audience, so Caesar presses for details, stating that winning the Games would surely help Peeta's pursuit of the young lady. Peeta insists that "winning won't help in [his] case (130). When Caesar asks, "Why ever not?" Peeta "blushes beet red" and confesses that his crush is on Katniss (130).
His shocking disclosure surprises the audience and Caesar, but angers Katniss who feels like he has made her into "some kind of fool in front of the entire county" (135). Haymitch counters Katniss' displeasure with the advice that appearing desirable and like "star-crossed lovers" will surely help both of them draw in more sponsors (135).
Peeta's revelation reinforces the suspension of belief in the books between the readers and the characters of what is real and what is merely said and done for the sake of the Games, a theme that continues throughout the novel.
That he has a crush on Katniss since they were kids. :)
He Likes katniss but he hasn't told her
The surprise that is revealed during Peeta's interview is that he is and has been madly in love with Katniss.