Love is the invisible string connecting the hearts in tune. When somebody loves you, he/she has many ways to show that love for you.
Someone show all their love by saying sweet words. They can easily say those romantic words any time, any where.
Someone who doesn’t or couldn’t express their love by words. They just show their love by taking care of you, supporting you.
For those people, you can use either words or actions to repay what they give you. Because they prefer what you’ve done rather than what you’ve said.
And the actions of love such as: taking care of, worrying… have its own language. Sometimes, it means a lot more than the sweet words.