i dont think its wrong to wear jewelry from an ex - i have a really pretty gold ring with diamonds all across the top of it - i wear it usually everyday - as long as im wearing my gold. ive had it for 3 years now, and im kind of partial to it. and we didnt end on necessarily .. bad terms... so its kind of ok to wear it i think ....
and i have an italian boot charm that i kind of, umm, borrowed ... from a "friend" .. i wear that all the time too .. i love it. its so pretty, and when i broke it i even shipped it back to the jewelers in new york it was bought at to have it fixed right ....
i dont know - if you dont care about it - and you dont really need to divulge to anyone else that its from some ex or something ... i dont know, just my opinion!!