Formal:
* Ich mag Sie. (pronounced: ikh mahk zee) - This is the most formal and polite way to say "I like you" and is used when addressing someone you don't know well or someone older than you.
Informal:
* Ich mag dich. (pronounced: ikh mahk dikh) - This is the informal way to say "I like you" and is used with friends, family, and people you know well.
* Du gefällst mir. (pronounced: doo ge-fehlt meer) - This is a more literal translation of "You please me" and can be used with friends or people you know well. It can also be used in a romantic context.
Romantic:
* Ich finde dich toll. (pronounced: ikh fin-deh dikh toll) - This means "I think you're great" and can be used in a romantic context.
* Ich bin in dich verliebt. (pronounced: ikh bin in dikh fer-leeft) - This means "I am in love with you" and is the most romantic way to say "I like you."
It's important to choose the right phrase based on the context and your relationship with the person you are speaking to.