its because the capitol hijacked his memories and its makes him hate katniss.
The Capitol hijacked Peeta's memory about Katniss and is supposed to think she is his enemy and has to kill her.
SPOILER: Yes.
Katniss Everdeen-Stay with me.Peeta Mellark-Always.Mockingjay, page 314
there are five but the two main ones are katniss and Peeta
As seen in the epilogue of Mockingjay, she has had two children with Peeta, who she selected. Gale works for the government after the abolishment of the Hunger Games.
He tries to kill Katniss after the Capital brainwashes him in Mockingjay.
at the end of mockingjay both peeta and katniss get married and have two kids.
In a tweet, Suzanne Collins said their names are Willow and Rye.
SPOILER: Yes.
Katniss Everdeen
Katniss, Peeta, Gale, and Haymitch
peeta gave bread to katniss when they were 12 and katniss and prim and their mom were starving
Neither of them die.
Katniss Everdeen, and Peeta Mellark
Katniss Everdeen-Stay with me.Peeta Mellark-Always.Mockingjay, page 314
Peeta Mellark.
there are five but the two main ones are katniss and Peeta
peeta mellark lives in district 12 with katniss everdeen