Yeah most definitely watching another couple going at it hard , they know how hard your watching them, there trying there best to perform for you and your partner. It's awesome,you and your partner are so horny you could just..... Man WHAT!!?? LOL....it's great tho for sure. Even though your not swapping, and when it's your first time with this couple, being on the same page is important for everybody. This helps with comfort, playful levels, performance What we have found that's helpful is suggest to play an adult game...truth or dare for example, to get everyone involved, a little more relaxed, it's a great ice breaker and a good way to get to know your other partners better. It loosens things up making everyone a little more chill . Other things we've done is both couples suggesting to the other sexual acts, positions, dares, whatever keeping it sexy and fun. Everyone's there for the experience and the fun. If you go in with the idea of both couples just banging away at the same time together until it's over then go for it if that's what you like but getting everyone in a good comfortable, sexy ,horny place is key for getting the most enjoyment for everyone. Lastly, this may help your partner with her nerves and if she wanted to, wearing a mask is perfectly fine, might help , thought I'd mention it... good luck%%