The former co-star's romance has been a longtime debate amongst fans, even after LaBeouf said the chemistry was real between them during an interview in 2011.
Fox sat down with Andy Cohen on Thursday to play "Plead The Fifth" on "Watch What Happens Live" and spilled the tea on all juicy details. When the talk show host asked Megan about their past relationship, she answers, "I confirm that it was romantic."
The action duo starred alongside each other in 2007 for the original "Transformers" movie, then again in 2009 for the sequel. Megan was later removed from that movie after making negative comments about director Michael Bay.
The actress then follows up saying, "I love him. I've never been really quiet about that."
Her relationship timeline with LaBeouf is a little messy, falling between the same time as her on-again/off-again romance with her husband Brian Austin Green.
Fox and Green were engaged in November 2006 before calling it off in February 2009. They got re-engaged a year later and quickly married. Megan filed for divorce in 2015 ... and then they reconciled.
Megan talks openly to Cohen about her tumultuous relationship with Green, and even revealed the craziest thing she's done during a fight.
Hint: If you date Megan, you better hide your markers.