Threesome issues

marie

So I’m married, have been for a little over a year my husband and I want a threesome but I’m “picky” apparently seeing as I want someone who’s clean, age appropriate and that doesn’t have a personal or work relationship with us. My husband wanted to have a threesome with one the the younger girls at his work that he is kind of friends with. Automatically I’m like no. Just because I don’t want some young girl that is friends with my husband and working with him to be trying shit behind my back and I don’t want her to get more attached. And I don’t fully “trust” my husband at the moment so theirs that. But the thing is he now wants us to be friends with her and she invited herself over after thanksgiving dinner. I just feel so uncomfortable with this situation and my mind won’t shut off about my feelings about the situation