Three some

Ok. So my husband and I are scheduled to have a 3-some with a good friend of mine. He’s never had one before so I’m doing it for him. My friend (female) likes women a lot more than men and I like men more. I just don’t want my husband to feel left out. I don’t see myself having sex with her and I’m having second thoughts. But I’m doing it for my husband. It was my idea, btw. Any feedback?