Cuddling is a form of physical intimacy. It's an exchanging of caresses between two partners which can include kissing, stroking etc.). It is mostly practiced before sex as part of the foreplay or afterwards.

Cuddling

For many women cuddling is an important part of an erotic encounter, while men (stereotype) are not that cuddly and instead prefer to cut to the chase right away and after the sex like to have some peace and quiet. There is a reason, why most of the porno movies made for men doesn't have a long foreplay or after play.