It does not matter if it says "forged by trendylovesu". Anyone can dupe an item and the "forged by" is copied along with everything else. Who it is forged by is not a way to determine if an item is duped. I would not listen to my friends telling me to trade something. Be a responsible trade partner and never trade something if you don't know its legitimacy.
Thats my opinion.
If you give or trade to someone something that pops, they WILL remember. It will stick with you.
like if i assume things are duped ill ask if they care if i can give them it for nothing but they wont care if it pops