Well, if you think about it, the two of them wouldn't have ever even met if it weren't for Tsunku. Ayaka might not have ever moved to Japan if Makoto hadn't come up with the idea for Coconuts Musume and convinced Tsunku to bring them in.
And Ayaka only started taking golf lessons because she never had any work to do for H!P, so she needed something to do. Tsunku once again plays the match-maker!