You can say “Te amo, Jason, como a mi hijo.” This means “I love you, Jason, as my son.”

If you want a more natural, affectionate way to say it, these also work:

  • Te amo, Jason, hijo mío. = “I love you, Jason, my son.”
  • Te quiero, Jason, hijo mío. = “I love you / I care for you, Jason, my son.”

A small note: “te amo” is a stronger, deeper kind of love and is commonly used for children and close family, while “te quiero” is softer and also very common in family settings.

If you want, I can also give you:

  • a more romantic version,
  • a more natural Latin American version,
  • or a version that sounds more like a parent speaking to a son.