I'm an undergrad, and I've been casually dating an older girl for about a month. So far I've enjoyed my time with her, because she's gorgeous, and it's a real turn-on to date a woman who's so accomplished. I'd like to eventually progress to dating her more seriously, but some things make me uneasy. Firstly, while she's incredibly sweet on the phone or in person, and she's enthusiastic about our dates, but she's never the one to contact me. She'll answer my calls or texts almost immediately, but otherwise I pretty much just don't hear from her. 1) Should I be worried about this or is this not a big deal? 2) Going forward, what's a good way to behave towards her that will keep her interested in me?