This is the most powerful Selflove statement you could ever make. Every expression of Love is an expression of Selflove. Selflove (the Love that you are) is the only Love you can experience and express.
Love essentially describes the experience of unity. Therefore, the words I Love You, express the experience of unity between I and You, making You and I one. From this perspective, to Love someone, is to recognize in them the Love that they essentially are as one and the same Love that you essentially are.
What do you mean when you say “I Love You” to someone?