My wife recently let me know that she is bi. We’re looking to try out a threesome so that she can explore that side of her, but with me in the mix too. So we’re looking for a provider who is bi and couple’s friendly. We live in NJ but very close to the city.

You might try Carly Crawford, who visits NYC  and offers this service.  No personal experience but she has many stellar reviews in this area.

I've helped many women with their first-times as well as couples begin exploring threesomes. I have a modest upcharge for couples as these types of sessions bring me great joy

Enthusiastic bisexual here

I love to connect with couples while helping them stay connected with each other. I live in NYC but have a car and am happy to cross the water for a fun & sexy time

Hi there, I’m available in both NJ and NYC. How fun! I love couples! I believe I have a review or 2 from couples. Feel free to reach out after viewing my website!
Xoxo
Taylor