how do I say I love jason as my son in spanish

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.