I don't know. Corrie was available at 3.30am precisely because his night out had not gone to plan. If there was a (presumably male) predator either on the streets looking for a random, possibly slightly vulnerable, victim or e-cruising on Grindr, then Corrie might have been his perfect victim. Separated from his friends, still at least slightly drunk, bored, getting cold and not quite sure what to do with himself.
Corrie might well have been the unlucky sod who was in the wrong place at the wrong time and simply available.