For some couples, a look says it all. Others need but a few simple words. Anna Kendrick and James Corden, cycling through an entire relationship on Wednesday’s Late Late Show, pulled from the whole catalogue of love songs to produce a pop opera of fuzzy feelings. From “Can’t Feel My Face” to “Marry You,” Kendrick and Corden made the song of their heart the song of our ears. Kendrick and Corden sitting in a tree, s-i-n-g-i-n-g.