Gym Crush

There is this girl who happen to work out at the same time as I do at the gym. We have shared machines 2-3 times and I also caught her looking at me at times🫣. But, I am shy and I haven’t talked to her. What should I do, should I talk to her, was she looking at me or was just zoned out. I don’t have any experience please help me out. (I am a guy btw)