I think my gym crush likes me back but I’m not sure, what should I do?

Anonymous
I started liking this one guy I normally see at the gym a few months ago. I first noticed him, when I caught him staring at me and ever since then he has done it constantly. At times he would look at me and then I notice, he looks away, sometimes looking back to see if I am looking at him. I try smiling at him but when I do he looks away or continues staring. One time he almost forgot his headphones and he went up to his friend, and it was so obvious he was talking about me because they both were looking in my direction and there was a person who turned around to look at me. The other day, I went to the stretching area and he saw me and next thing I knew he came there to do ab workouts beside me which I have never seen him do. I want to say hi to him but unfortunately I have bad social anxiety and am shy, it doesn’t tend to go well if I approach someone first. Is there anything I can do because I feel like staring at each other and making eye contact all the time is getting annoying?
I think my gym crush likes me back but I’m not sure, what should I do?
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