I think it is not much to ask to know how a bank wire works.
Most exchanges accept bank wire (at least Mt. Gox and TradeHill).
And for the sponsoring of girls: I didn't mean the boy has to give them as gift.
He could simply say: give me 50 bucks and I'll exchange them for you into bitcoin.
This isn't really that hard.
(BTW In most / a lot of relationships this is the case anyway...the guy does the setup of new technical stuff and shows the girl how to handle what she needs (unless she is smart enough to do all by herself))
This is what I'm going to expect to happen, yes it's very stereotypical but there's a reason why stereotypes exist
Guy: Look at this awesome new payment method using Bitcoin...
Guy: <monologue about Bitcoin>
Girl: <glassy eye after 30 seconds>
Guy: <Finally noticing it, 5 minutes slow as usual> Nevermind the details, point is you can buy these pretty shoes online!
Girl: OH, why didn't you say THAT in the beginning? That looks pretty, how do I buy that?
Guy: Simple, it's like using Paypal... erm you just need to create an eWallet first... let's just download this...
Girl : <Twiddle hair>
Guy: Yeah, that's done
Girl: So I just click buy using Bitcoin?
Guy: Erm no, we need to get you some coins first...
Girl: <roll eyes>
Guy: Let me see, that's more than I have in my ewallet. I'll go wire some money to MtGox, then we can buy your shoes next Wednesday!
Girl: Forget it, XYZ has a sale of the hour discount on something similar, I'm just going to use my credit card.... <30 seconds later> done. This bitcoin shit sucks, I'm so telling the girls not to waste time listening if their guys get started on it.
<6 months later, with vastly improved Bitcoin infrastructure>
At some party
Guy B: Did you girls know about the latest awesome bitcoin fashion shop?
Girl: Oh no, Bitcoin sucks, it's complicated and take forever!
Guy: That was 6 months ago, they've improved...
Girl B: <ignores Guy> Really? It's that bad?
Girl : Oh yeah, it was such a mess! I had to do a bank transfer to buy anything! By the time I could buy something, Fedex would had shoes from XYZ at my doorstep
Girl C: Oh my, that's so bad!..
Girl A: tell me about it, such as waste of my time!
Girl D: Bank transfer? Where did they come from? 1990s? Didn't they know about credit cards?
Girl A: Apparently not! <girls laugh>