Good question of how to revive a partner, make it again to engage in business.
It is not good to be boring or you can try sending the message or if you get in touch on the social network is slowly influence to continue to work.
If their example and progress to start it to continue operating.
Nice words, help him if he wanted to dedicate his time.
If you accept and continue to work, you can give him an incentive if you are able and you have TripleClicks Gift Card.