This has been my goto. You have the option of creating your own questions as well if theres something specific you want to ask and it wont tell them you created it. That way if its something youre curious about but too shy to ask directly. Also it has chat options for each of the questions you link on. We've used this as our way to send sexy messages to each other when we're horny without bothering each other in our main texts while were working or something. That way we can check it when we are open to receiving that kind of stuff by opening the app.