How to form relationship with realtor?

[Rita Grimes]

Hey guys! I am new to this website. I've listened to the podcasts and am so inspired by you all. My husband and I have decided to focus our attention only on wholesaling for now and eventually do rentals. We had been talking to an awesome realtor in town for the past couple months trying to find rental deals (until we decided to focus on wholesaling) and he was very familiar with the investing community in Augusta, Ga. I'm wanting to ask him for help forming a cash buyer list by asking him for names of contractors, buyers, etc that he knows. Would realtors be willing to give that information? Will they somehow benefit off giving me this information in the future? Or opposite? What can I offer him in return for this information? Would it be a good idea to take him to lunch and explain our goals to him? We like him a lot and has proven to be a great resource for real estate investing and would love to form a good relationship with him, but also don't want to burn any bridges by asking too much from him. Any insight would be great!!! Thank y'all in advance!