Course I would although the only thing I would want would be to tell him how to undress you to naked then Once you were naked you and him would do what you wanted in front of me and do what you wanted after,like him ...... with you (funny expression) whilst I stayed down stairs .......
not sure you would have to tell her to touch it, it would be driving her mad trying not to just drop her panties for him and have him fuck her there and then like I would, lol, once she spotted his bulge her pussy would be dripping wet and screaming out to be fucked by his big cock