<human>: First time posting here. So my problem is kind of minor.
So onto my situation. I am really into fitness and work out a lot. There's this guy who I see at the gym frequently. I mean almost everyday at the same time. We are both pretty attractive fit people (I'm just saying in general not to sound vain), and we exchange looks pretty often, and I mean not just your ordinary 'looking around the gym' type of looks. I mean we hold each other's gaze for at least 30 secs sometimes it's a little weird. 

He's smiled at me several times etc. SO I decided if he wouldn't approach me, well I should approach him right? Maybe he thinks I'm taken? So this past Friday I was going to go up to him and right before I did another girl who is working out on the cable cross next to him starts talking to him and asks for his number.

 They exchange numbers. I am a little down, I feel like I'm in a movie at this point and I just lost my opportunity. But at least I can assume he is single. I finish my workout and leave. Now I don't know if I should even bother anymore..What do you guys think? If I see him again should I hit on him or just leave it alone? I'm pretty shy when it comes to this stuff so any help is appreciated thanks.

Can you condense the text into a few key points?
<bot>: Feel like I missed my opportunity, but wondering if I should still ask a guy out at the gym after watching him exchange numbers with another girl who hit on him?