Most couples have a hard time talking about sex. So, extra points for your husband being brave enough and loving you enough to share with you his desire to watch other men having sex with you. It's very likely that he wants this for your pleasure as well as for his own. You already said that this was coming from a place of love. I feel that you are dwelling on unfounded fears when you should consider how much pleasure both of you could get. Be as brave as your husband has been with you. Give it a try, and, if you don't like it, you don't have to do it again. But, you'll never know unless you try it. I hope you'll keep us posted on how this plays out.