How did the ancients express "I love you" in their poems?

I don't know how I feel, but I want to say "I love you" in ancient poetry!

A love that consumes everything, you can go home slowly!

If Nanfeng knows how I feel, please blow my dream to Puxi Island.

Without the pear flower and the moon, it will be different.

If you are lucky, don't thank me. Jiashu has to live alone.

I hate each other and know everything.

I hope to win a heart and never leave each other.

May there be no years to look back and grow old with deep affection.

I miss you every day, but I can't see you, so I drink Yangtze River water.