Hooligan: That's exactly the kind of info I was hoping for

Thanks for sharing your story ... that's so cool, how you met your husband !
Gym, hmmmmm ... given that I go there 7 days a week, maybe I should give it a shot

There are some HOT gals that come to my gym.
There is one gal who works out by herself (so maybe she's single), and we've kind of exchanged looks a couple of times. Maybe I should say hi to her.
But then, isn't it obvious ... if I walk up to her and introduce myself, that I'm "interested" in her ? Won't that be awkward ? How do guys manage that ? What's the first line ?
Once I've made initial contact, I'm quite comfortable keeping a casual frienship going. But, that initial contact, that first line I say ... is the BIG OBSTACLE