Cininnati area. Wife (56) and I (55) have been looking for another guy for MFM to fulfill her fantasy. Better to hire a male escort/prostitute? If so, how and where?

Sorry for the long title. I wasn't even really sure how to ask. Trying to organically find a third for an MFM isn't easy. Over 4 years we really haven't even been close. Would it be better to hire a male prostitute/escort/sex worker to help this fantasy come to life? If so, where do I even start to find one we can trust?