Is this a good way to talk to a guy? What would you think if someone said this to you?

Anonymous
I wanna talk to a guy at the gym that I've been crushing on. Im too scared to be upfront with him , but I do think he's also interested in me. I can't figure out how to approach him but I thought of one way that I need a guys opinion on. there's a middle aged creepy guy who talks to me for 30/40m during my workout and my gym crush sees it but I get super annoyed of that guy. I wanted to go upto my crush next time and say “Can I pretend im talking to you until that guy leaves this section? “ I thought maybe hed feel as if I trust him / he can protect me. then i could add “ He won't come up to me if Im talking to the biggest guy in the gym” or something? I don't know how it would go but if a girl said that what would you think?
Is this a good way to talk to a guy? What would you think if someone said this to you?
1 Opinion