Hey sweetie I have a suggestion for you. Most girls just don't want to see two men at once for safety reasons and to keep the ratio 1:1. BUT if you find a girl who has a doubles partner and you and your friend see the two ladies together they may be more inclined to do this! I don't have a doubles partner currently but just a suggestion. Otherwise it always helps if you have a regular provider and maybe bring this up after a few visits.
Good luck!