<human>: 6 weeks ago, I (25/F) started dating this guy (25/M). In the first couple weeks of dating, we hung out every week or so, but now it's around every 3-4 days. We are both young professionals (I'm a 3rd year med student, he's an engineer), so we have busy schedules.

I always wait for him to initiate contact, and he texts me about every other day. Our conversations are usually short but flirty. He's met a handful of my friends, and I've met a handful of his friends at bars/housewarming party/etc. We had sex on the 4th date, and we've been having mind-blowing sex since then. We have amazing conversations. I have a crush at this point.

I've had a serious long-term relationship, but never really casually dated, so I'm looking for some advice. Is it normal to only be hanging out twice a week and texting a couple sentences every other day in the "beginning" of dating?

I'm wondering if he's just not that into me, and how long I should wait for some kind of "commitment" (an exclusive relationship) before I get more emotionally invested. I've never asked him if he's looking for a relationship or for something casual - because I don't want to be that "crazy girl."

I'm thinking if he did like me enough, he'd want to be exclusive at some point, and try to escalate this. How long should I wait for him to bring this up?

Can you give me the gist of the text in a nutshell?
<bot>: How long did it take for you to decide that you wanted to be in a relationship with your girlfriend/boyfriend/ex/etc?