Hey look, a romantic comedy about old people! Divorced... with benefits is a really good subhead, very concise. This movie is in a league of its own, way above those sappy romantic comedies with lead roles played by 30 or 40 somethings in search of a career boost. In this movie, you instead get Meryl Streep doing a relatively lightweight role and turning it into something memorable. The double Golden Globe nomination is justified.
The movie is hilarious because of the oddity of its premise about an ex-married couple having an affair more than a decade after the divorce. It is just ironic how the previous mistress now becomes the aggrieved party and the previous wife suddenly turns into the other woman. It is a bit wacky but it works.