Open Question: I have a concerning foot fetish.?

[feedcrawler]

When my boyfriend and I have sex I make him stick his feet up my vagina. It started ever since my 25 year old brother and I used to have sexual interactions when I was 12 and he was 24. So it started last year when I wanted to practice sex and now we do it all the time. Its feels great when he shoves one of his feet and wiggles his toes around inside me. It's probably wrong but I beg him for it. He doesn't mind it, hes happy enough to practice with me. What should I do? Please help.

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