We learned of the pair's engagement in April after six months of dating — but FKA's move doesn't surprise us after In Touch revealed he was secretly talking to his ex Kristen Stewart!
"She confronted him about it straight away and he insisted it was just a good-will congratulations call about Kristen being in the Oscar race this year. She is not happy at all about this and isn't really satisfied with his explanation," an insider previously revealed.
"[FKA twigs] knows how hung up Rob was on Kristen and how hard it's been for him to move on, so the fact that he's gone and done this has totally unsettled her."
We hope they work everything out!