Open Question: Am I cheating my girlfriend in some way?

[feedcrawler]

My gf and I are both grad students and we live together. She gets tired being on her feet in the lab all day and so, for sometime now, I give her a foot massage in bed before we turn in. The thing is, I have a foot fetish and absolutely love treating her this way. But she does not know about this, which means I am basically using her sexually "under false pretenses". Is this wrong. Is the fact that I feel guilty about it proof that I am wrong? Should I tell my gf everything and confess that I love giving her foot massages and apologize for not telling her before? How will she react?

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