"Hi, I want to thank you for how much I love you, friend. You are my lifelong friends, and keep going as you are."
Here is a breakdown of the sentence:
* Hola: Hello
* quiere agradeserte: I want to thank you
* por lo mucho que te quiero: for how much I love you
* amiga: friend
* ustedes son mis amigos de siempre: you are my lifelong friends
* y siga asi como van: and keep going as you are
The phrase is expressing deep appreciation and affection towards a friend. It conveys the speaker's strong bond with their friend and wishes them well in their endeavors.