My opinion on Una for dating site, as this is my specialty, I can talk about it. Yes it is possible, but I would say that it still lacks things, such as limb blocking, profile photos, but possible to work around the problem, but planned in version 10. So let's say we're moving in the right direction, a year ago I would have said, no, now I say, yes but ...
I advise you the following modules that give a "more" for dating sites.