I 22f want to back out of friends with benefits with my boyfriend m23 and another couple.

I (22f) have been with my boyfriend (23m) for almost two years. We have handled thick and thin and trust each other completely. I brought up during sex one night about sharing and we have had conversations about finding other people to bring in. I want to be clear, we are not opening the relationship. He found another couple on Reddit (mf25) and we have been talking back and forth. They are super cool people and we were all not the same page about what we wanted from a friend’s with benefits situation. We blurred faces to protect privacy and talked for a few days before we revealed faces. My boyfriend and I sent ours and were very nervous. They didn’t even mention it in the groupchat when we sent it and ended up sending theirs. I had gotten to know these people over a few days and really liked them but just do not find them attractive at all. My boyfriend is still willing to see how things play out but I don’t want to be dishonest and let them on if I don’t find them attractive. We have plans for later this week to hang out just to get to know each other. We all wanted to be friends before anything happened. Would I be wrong to not want to continue to get to know them if I don’t find them attractive?