am i inventing thigs again?

i have a hole in my memory <img src=http://www.ezboard.com/intl/aenglish/images/emoticons/ohwell.gif ALT=":\"> i think i read somewhere that when Sauron was still living in Valinor he fell in love with a female Maiar but, not being corresponded he began to fed bad feelings and so he decided to attend Melkor's suggestions.

am i inventing this? i've looked for it but i'm clueless where it may be...