Clubs would be your best bet for that
Or maybe have the couple post it
But even then
You may find it very hard as not meny will meet 3 random strangers they never meet before
I know I definitely wouldn’t
For that kind off things clubs only
But good luck op
As Natalie said it might be better if the couple posted this ,as not many ladies will agree to meet a single man and a couple just by looking at his profile.
She'd need to have attraction to more than just you & there's the safety aspect too.
Miss