Decent watch at best, probably won't watch again, and can't recommend.
Not being a big fan of either Jennifer Aniston or Gerard Butler, even with a great supporting case, and some amusing "villains", I'm had low expectations for this one, even the first time I watched it.
Most of it is those two just screwing each other over as they explore their relationship, which is funny, but it's like a more action focused, versus version of "Duplex", and it was more entertaining to see them work together in that, than these two against each other in this.
I expect anyone with an ex-wife is going to really enjoy the first half of this movie, at least. The obvious reconciling, and general unlikeability of the characters just sinks this one for me. I was never on board with either character, so I don't care if anything good happens to them.