Yea thats true penjee.... fake amritthari's are becoming more and more common, one thing beautiful about sikhi is, by constantly doing Vaheguru sirman, you will soon forget this - obviously it wil still come to your mind now and again, but power of Gurbani is that the thoughts will come in one ear and go out the other instantly - just keep doing simran...
but i'm guessing you weren't married to him?....so what you should understand is that having any type of relationship before marriage is bad as the main points of Sikhi is to be desireless....even if you have a relationship and theres no contact or anything etc - such things have an affect on the mind, where your mind will go towards lust etc