Hi Niki, good question. I believe a condom may make a slight difference, as you're right, there is some sort of barrier. Physical matter is a form of energy too, so the exchange of body fluids surely has to count for something. However, in comparison to the energetic transfer, I think the physical energy exchange is negligible. Condom or not, sex is a deeply intimate connection - the binding of two auras/energetic bodies which facilitates the easy passage of energies. A phrase I heard comes to mind "a condom won't prevent a sexually transmitted demon"