The teens who allegedly fatally stabbed a Wyoming boytrying to protect his girlfriend had been in a weeks-long feud with the victim — and asked one of his pals if he wanted to fight them to “pay” his “blood debt,” officials said.

Dominique Harris and Jarreth Plunkett, both 15, — who are charged in the fatal stabbing of Bobby Maher on Sunday — had wanted to fight the teen since having a confrontation with him about two weeks ago during spring break at a park in Evansville, according to the Casper Star Tribune, which cited an affidavit detailing a police interview with Harris.