How would a guy feel if a girl at the gym called him attractive?

this kind of goes hand in hand with my last question, but guys how would you feel if a girl approached you in the gym (not during a set) and flat out told you you're attractive. I'm thinking of going up to my gym crush when he's not busy and just keeping it straight up with a simple "hey, I dont mean to bother you, but I just wanted to tell you that you're really attractive." Thats it really, just shooting my shot hoping it goes for the best. Let me know how y'all would interpret this or if it's a dumb way to approach.

How would a guy feel if a girl at the gym called him attractive?
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