Formal:
* Rwy'n dy garu di hefyd: This is the most direct and literal translation, meaning "I love you also."
* Rwy'n dy garu di hefyd: This is a more poetic and romantic way of saying "I love you too."
Informal:
* Dw i'n dy garu di hefyd: This is the more common and informal way of saying "I love you too."
* Caru di hefyd: This is a very casual way of saying "love you too," similar to saying "love you" in English.
Other options:
* Cariad, rwy'n dy garu di: This is a sweet and romantic way of saying "I love you too," using the word "Cariad" which means "love."
* Rwy'n dy garu di'n fawr: This means "I love you very much," and can be used in place of "I love you too" in certain situations.
Ultimately, the best way to say "I love you too" in Welsh depends on the relationship between you and the person you are talking to.