Firecrotch has reportedly lost yet another friend.

Sean Lennon, the son of slain Beatle John Lennon, is peeved at Linds for agreeing to appear in a film about the life of the older Lennon’s murderer.

LiLo portrayed a friend of Mark Chapman, the stalker who gunned down J.L outside of his Upper East Side apartment building in 1981, in Chapter 27. The film, also starring Jared Leto as Chapman, made it’s premiere at the Sundance Film Festival in Park City, Utah.

“It’s a tacky thing to make a film about. Lindsay was my friend,” Sean says. “I think she felt that she understood but she’d already agreed to do it.”

Before entering rehab, Lindsay told The Insider: “He’s my friend but he’s not supporting what went on (on the set). We respect each other… and I don’t support what happened to John Lennon.”