I am looking for TS threesome in NJ or NYC. Does anyone know of any providers who do that?

I would think most of them have friends. Find a good one and just ask. TS Petra Petrova is in Trenton and see is one of the highest reviewed TS providers on TER. Check her out and see if she's a provider you might like, and just ask.

See Alessandra who can do TS or male threesomes.