Just MINUTES after Selena Gomez released her new single "Love You To Leave You," which seems to be about her painful split from ex Justin Bieber, Hailey Baldwin posted the song "I'll Kill You" by Summer Walker to her Instagram Story ... coincidence? Fans say, hell no!

Selenators are speculating that Mrs. Bieber posted the song as a not-so-subtle response to Gomez's new single that has lyrics like, "In two months, you replaced us / Like it was easy," which, if about her and Justin, is a little harsh, right?

UPDATE: Hailey has posted a comment on Instagram about claims she was shading Selena: "Please stop with this nonsense...there is no 'response.'"