Fiancé wanting to try a strap on...

So my fiancé has told me before he wants me to use a strap on on him... does anyone else use one on their man or has before? I don't know how I feel about it and I would like some women's help. No he isn't gay and I really don't want any rude comments.

Edit: I don't know if I am I wanted to hear what other people have thought and stuff. I'm just confused and not sure what to do..

Edit #2: thank you all for your help! I guess we are gonna try and it and see where it goes! Thanks for all your support and no rude comments! It really helped!