How do you politely tell a co-worker you wa nt to play with her feet?

[Michael101453]

I am an older guy (in my 50's) who works with a very attractive 20 year old female co-worker. We have known each other for several months and have developed a very close friendship (non sexual). She has the most gorgeous feet I have ever seen and I get so horny just loooking at them. I think she knows I like her feet because she always wears footwear that reveals her beautiful feet and toes and sh3e is always putting them where I can see them. I know she has caught me staring at her feet on several occasions and doesn't seem top mind my looking. How do I take it to the next step and tell her I love her feet and would like to play with them?