Lol no. I buy those things and take care of myself because I want to, regardless of whether I'm seeing someone or 'trying to get a guy' or not. I think that's silly. I think whoever initiates the date should be expecting to pay, simply because I wouldn't initiate a date if I didn't have the means/money to pay for it, or I would plan something that is still fun but costs nothing. And if you ask someone out but expect the other person to pay for their half, then that should be established before you're actually on the date, otherwise the other person might not be prepared because of that lack of communication and misunderstanding in expectations.
In a relationship, I think the same basically applies, though in MY relationship, we take turns paying depending on whose idea it was to go out, and which of us has the means/money to cover it at the time. Or we go halves. Sometimes I just like to treat my guy to something nice, and vice versa. I don't expect him to pay for everything, by any means. Our spending tends to be pretty even when it comes to going out or buying things for each other. Like for example, I'm expecting my check any day now, and I was planning on springing for groceries this time, to make meals at home for both of us. That's me spending money on 'at home dates' kind of, and doing all the work myself. He doesn't know this yet because I only decided it today at work and made a shopping list a few minutes ago. I also added some other things that will be beneficial to us both, like laundry soap, razors, and lube. =P I'll probably end up wanting to go out too once I budget my money and set aside what I need for my bills, in which case I'll be paying because it's my idea and I know I have more money than he does right now due to our checks coming at different times. It's actually really convenient, because we're able to cover each other when necessary, and I'm sure he'll be wanting to return the favor when HE gets paid, whether it be paying for groceries or taking me out. It works for us.