Its hard to say man. Id wait until Ive seen her a couple times to make sure youre not stepping on someones toes. After that, do the casual hello as you pass. Then from there, feel it out. I met this trainer at the gym about 3 weeks back and thats exactly how it happened. After a set of biceps I walked over to get some water, and we crossed paths and the endorphins kicked in and by the end of my workout, she gave me her digits....and thats how I broke my phone. Ended up at her house, in her jacuzzi...cell phone in pocket. Weaksos.