I mean, isn't your dating already integrated with a lot of your social life? That's part of why breakups are tough, no?
Making a comment on the product, it makes sense to me since it mimics how things work in real life. A lot of people meet their significant other through friends and given your social sphere.
Given the profile example, it seems hard to be somewhat pseudonymous... I could probably look that person up as a 2nd - 3rd order connection on FB or e.g. Linkedin.
I don't see a draw to this app.
I thought it was brilliant because now all pictures have to at least pass the social proof of being one of your public profile pics. It's more trustworthy. Though they've since relaxed the requirement, probably because they didn't want to be so tied to Facebook.
It's true that you can often google/facebook search matches on dating sites. I have done that before just to get a better idea of who someone is. But that already exists.
But I think there is value in enforcing a Facebook profile linkage to a dating profile. It's hard to bullshit, and it's harder for someone to then waste your time.