Would/Have you had a threesome with your SO?

Sarah
Ok, I'm curious as to how many ladies using this app have had a threesome with their SO and another woman. 
I'm curious because my SO told me that he can't see himself having sex with only one person for the rest of his life. I asked him what he means exactly. He says that, if he is honest with himself, he needs to be with more than one person, preferably a threesome. He doesn't want to go out independlty and have sex with someone; but wants me to be there, to be part of the experience, with him. 
But I'm conflicted. On the one hand, I appreciate his honesty and openness. I see where he is coming from...that on the span of ones life, they might want to be with another person. On the other hand, by him wanting to be with someone else, I feel like I'm not enough. 
But it's the experience he is looking for. I've never had a threesome, though I have made out with my best friend some drunken nights in my twenties. And if I'm honest with myself, I am curious to be with a woman. However, I don't know if I'm capable of sharing my man. 
What do you ladies think? Please be kind with your comments as I am opening a very private part of myself up to you. Thank you. 

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