You know how when you give someone a compliment and then they give you one back, how does that make you feel? It just cheapens the compliment. To really give a gift to someone, simply thank them for their compliment. It makes it even more powerful. For you and them.
The real power is with the words “I Love You”. When someone says this to you, if you simply say thank you. It makes it even more powerful. Unless the person you are doing this to is saying it because they want to hear it from you.