Short and sweet:
* "Mahal na mahal kita, kaibigan." (I love you so much, friend.)
* "Ikaw ang pinakamagandang regalo sa buhay ko." (You are the best gift in my life.)
* "Salamat sa pagiging ikaw." (Thank you for being you.)
* "Sobrang saya ko na may kaibigan akong katulad mo." (I am so happy to have a friend like you.)
More sentimental:
* "Alam mo, masaya ako dahil sa bawat araw na kasama kita, lagi akong natututo ng bago." (You know, I’m happy because every day with you, I always learn something new.)
* "Ang ating pagkakaibigan ang pinakamagandang bagay na nangyari sa akin." (Our friendship is the best thing that ever happened to me.)
* "Sana lagi tayong magkasama." (I hope we are always together.)
* "Walang ibang gusto kong makasama kundi ikaw." (There’s no one else I’d rather be with than you.)
Funny:
* "Alam mo ba, nakakatawa ka, pero mahal kita!" (You know, you’re so funny, but I love you!)
* "Ikaw lang ang kaibigan kong kaya akong tiisin." (You’re the only friend who can tolerate me.)
* "Tara na, mag-adventure tayo!" (Let’s go, let’s have an adventure!)
You can also use a specific memory you shared with your friend to make the message even more personal.
Remember to use a warm and friendly tone, and personalize the message to make it truly meaningful to your friend.