Agree with this.
The only indication is Reaper's comment "A few people saying they seen them pashing at Laneway!! ", and if it's true who knows if it was just alcohol/substance induced on the day - but who cares? I'm not a fan of Boog, but she is straightfoward, self-aware and appears to have no baggage and no agenda other than to be herself and to enjoy herself. She'd be a breath of fresh air for Drew, and why not enjoy a fun fling after 6 odd months of drama?
I'd actually missed that comment about them kissing at Laneway but I still don't put much credence in those people saying that saw it. I really doubt Drew would be spotted somewhere so public having too much of a pash with Boog (after the news of Drully splitting is so fresh). Then again I think he was as high as a kite so he could have without thinking too much.