> Nobody is going to reject a human partner because they already have a cell phone app.

I'm not so sure about that, actually. Most people won't, but there do exist people who don't do what's needed to have a human partner because they have porn instead. I don't see how an AI girlfriend would be any different.

> why not let them have an app if it makes them happy?

Who's talking about not letting them have the app? I find it incredibly sad, but it's not my life so not my business.