Transformers star, Shia LaBeouf, has just admitted to hooking up with his former co-star Megan Fox, but the problem is … she was more than likely with Brian Austin Green at the time!

LaBeouf had an interview with DETAILS magazine, in which the interviewer asked Shia about his past relationships and career, but most importantly if he had ever had relations with Fox.

“Look, you’re on the set for six months, with someone who’s rooting to be attracted to you, and you’re rooting to be attracted to them,” explains LaBeouf.

He continued, “I never understood the separation of work and life in that situation. But the time I spent with Megan was our own thing, and I think you can see the chemistry onscreen.”

When asked about Fox’s relationship with Green at the time of the secret hookup LaBeouf replied, “I don’t know, man. I don’t know. I don’t know. I don’t know…”

Then after repeating “I don’t know,” about 12 times in different ways LaBeouf eventually said, “It was what it was.”

A rep for Megan Fox responded to calls from TMZ with, “We have no comment.”

Way to kiss and tell Shia.