As a wild wife, I can honestly say that if a guy has got a fucking great cock, I like to suck it, but also due to my voyeuristic nature, love to see someone else enjoy it as well. That's why Dave and I embrace our Bi sides... But in answer to the question, it helps to get to know a couple first and what they like and any expectations. .We are straight forward with others and ask if they like same sex play, ass play, and other party favorites like BDSM, filming, etc. This way there are no doubts, but if a guy wants to suck my hubby or vice versa, I welcome it.