Which finger do you wear a promise ring on?

I read online that you’re supoosed to wear it on your left ring finger if youre not married and your right ring finger if you are married, but then I looked somewhere else and it said to save your left ring finger for an engagement ring and to wear it on the right. My boyfriend is giving me one on Valentine’s Day and I wanna make sure I put it on the correct finger so please help😅

Vote below to see results!