Tactics to avoid neediness

Hey fella's, I had a date last week with a chick who I had insane chemistry with. Very freaky, we had been sexting some public fantasy stuff and when we met, the vibe was on from the jump. The date was simple but very hot. We played out some shit and eventually back to mine to hook up. The sex was really good. It's rare that I find a girl where the chemistry is so palpable, and it isn't just me building attraction and seducing. This time it felt reciprocal. I find myself making novice mistake with her. I texted her on Saturday, and she didn't text back until Monday saying she was out camping this weekend. Said she got back in town Sunday, which means she waited a day to text me back. When I saw her text I thought "wait to text for a while", yet five minutes later I'm sending her her a reply. I feel like I'm making stupid and needy mistakes because I'm lusting after her so much. Meanwhile there are plenty of other girls texting my phone, which is usually enough to keep me from getting needy with any one particular one. I know on a logical level that this is just the influence of Oxytocin and endorphins in my brain, but it causes me to act irrationally. Does this experience resonate with anyone? What do you guys do to combat needy urges? When the sex is really good with a chick, I fall into the trap of thinking that she has the same urges as me and am tempted to blow up her phone any time I feel slightly horny. It reminds me of when I first started online dating (about a year ago) and I find myself fucking it up. Any advice would help.