How do you say "I love you" in German?

To say "I love you" in German, you would say "Ich liebe dich."

Extra: In German, "Ich" means "I", "liebe" means "love", and "dich" is the accusative form of "du", which means "you". So the phrase is constructed very similarly to English. It is important to note that "Ich liebe dich" is typically used in a romantic context, much like in English. For expressing affection towards friends or family, Germans might say "Ich hab dich lieb," which translates to "I hold you dear" and is less intense than "Ich liebe dich." German also has different verb forms and personal pronouns to denote the level of formality, but for expressing personal love, the informal "dich" is appropriate as it expresses a close relationship.