Can my secretary sue me for sexual harasement?

I began dating my secretary about the same time she became my secretary. We fought constantly, and I think it's because I didn't feel she was doing her job very well but didn't want to fire her so I gave her an ultimatum I said either date me or work for me. She chose to work for me which is fine but now I'm wondering if she could sue for sexual harassment. She was aggressive in pursuing me from the beginning. I never made any moves towards her that were unwanted.