"Ich liebe dich, Vati" would be my suggestion. Assuming informality...
Talking to parents and other family members (also to friends) is always informal in German. "Ich liebe dich, Vati" is not wrong, but sounds a little bit oldfashioned. Children today mostly say "Papa" or "Papi". Also, in this case it's more common to say "Ich hab dich lieb" instead of "Ich liebe dich".
So it could be:
- Ich hab dich lieb, Papa.
- Ich hab dich lieb, Papi.
or
- Ich hab dich lieb, Vati. (though, like I said, "Vati" isn't used very often by children nowadays. But many adults born in the 60s/70s and before, do still use it.)
Papa
"Papa" is German for "Dad".
PapiorVati
why does it matter?
If your dad is Mexican and mom is German you would be Latino. This is a mix in between.
Vati is the German word for dad. it is prononuced far'tee.
Her mom is Spanish and her dad is German and English.
The symbol for love in German is "♥" which is called "Herz" in German.
To say "I love you dad" in Maori, you can say "Aroha atu ki a koe, Dad."
Dad (in German)
Will you love in German is wirst Du lieben
In German love translates as:nounLiebeverblieben