Open Question: What do I do if a guy with a foot fetish invites me to go shoe shopping?

[feedcrawler]

This guy is my boyfriend's best friend and my bf told me this guy has a foot fetish. He's been kind of saying some strange things in texts lately and he admitted to me that he really loves shoes and wants to go shoe shopping with me. I'm kinda weirded out by it because of his foot fetish (he doesn't know I know). He also doesn't want me to tell my bf that we're going shopping together.. I don't really know how to get out of it without it being obvious that i know about the fetish. What should I do?

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