I would definitely get him a friend first. (Adopt if you can)
To bond with him, I would suggest hand feeding and outdoor run time/ floor time. Play with him a lot, especially as he is by himself. I like to buy my pigs toys or make them (I would suggest cardboard loo roll toys; my piggies love them.) I also find that holding and brushing your pigs is a good way to bond, but remember not to scare him when picking him up. Hope this helps!