All I can still say about this is, that's what I call looking too deeply into things.
About the line you mention, 'hope my boyfriend don't mind', to me it implies the contrary of what you suggest - that her kissing a girl doesn't mean anything. The phrase doesn't mean much specifically either. I give you another example - about 7 years ago I decided to have my long ponytail cut off and wear a short haircut instead, and at the time I was literally thinking, 'I hope she (my girlfriend) doesn't mind' - it's a very common phrase to turn up on somebody's mind for any reason.
'It's not what good girls do' is just pure irony, and if you insist on the word: perhaps 'targeted' towards the silly behavioural codes of society. There was a time when sitting without her legs crossed was 'not what a good girl does', the line is there for a joke.
'I don't even know your name' doesn't mean emotional indifference, we can't pick out single phrases and give so much weight to them out of their context.
Generally, marketing a song doesn't work by trying to design it for a narrowed, limited target group, I'd have thought that must be quite logical in terms of marketing, the song you've chosen to analyse doesn't really contain and imply a lot of social issues; like others said, it's a fun song, and the fact that it was something different from the usual just helped with getting attention which made it into a hit.
Katy is well known for writing anti-love songs; OOTB is full of them, and even on TD, as with Wide Awake, they still turn up. She's an artist who's a bit different in that respect, but to overanalyse songs and even make deep societal issues of them would be an exaggeration; with her songs, Katy doesn't try to go deep into things like Berthold Brecht or Bob Dylan would have done, it's all about pop and having fun with it on one side, and being involved in the big entertainment industry on the other.