Taken and adapted from Bluetooth pairing (when two Bluetooth enabled devices agree to communicate with one another).
In bluetooth, When this happens, the two devices join what is called a trusted pair. When one device recognizes another device in an established trusted pair, each device automatically accepts communication, bypassing the discovery and authentication process that normally happen during Bluetooth interactions.
This can however be used when on the town to refer to women you hope to hook up with.
<aie93> Seen anyone to pair with yet?
<Matthew1471> nah, that woman pushing the pram looks already paired.
Pairing is the verb meaning "to pair"