First of all, you should cooperate with him, the status is equal, and there is nothing to talk about. Make sure of your confidence first.

Second, since it is cooperation, the most basic thing of cooperation is mutual benefit. You should let him see what benefits your joining can bring to him first, which can be to increase income or increase brand awareness ... what benefits and support he can bring to your investment.

Third, you should also explain the actual situation honestly. Once you cooperate, he will know how to help you!