Whats a great compliment and a good line to use on a girl you are dating?

Oh no man! Don't use lines or corny poetry. Now a compliment is nice. compliment her on her eyes, mouth and say something like her necklace is really pretty (wink wink). And touching can be great way at showing your affection. Hold her hand, brush the hair out of her eyes, putting your arm around her, etc. Also always say she looks gorgeous when you see her. Dont over use the words i love you. All i can think of.