Magic Forums

I was intending to cast a love spell on a certain person and I wanted to do it before Mars will start getting into retrograde motion this December fearing that it might influence the spell negatively
But there's another thing which got me worrying - I know that one of her relatives is practicing some form of magic and I started wondering if it is possible that he'll find out that I had cast the spell on her (which will probably get me into quite bit of a trouble)
Not to mention that her mother is a little into that kind of stuff too
So what do you say? What are the chances that he'll find out without me telling anyone?