write a nice valentines message
Of course, I'd love to help you write a nice Valentine's message! Here's an example:

My dearest [insert name],

As Valentine's Day arrives, I want you to know how much you mean to me. You light up my life in ways I never thought possible, and I'm grateful for every moment we've shared together.

You bring joy to my heart and laughter to my lips, and I cherish every memory we've made. You make every day feel like a gift, and I can't imagine my life without you in it.

Thank you for being my partner, my confidant, and my best friend. I love you more than words could ever express, and I can't wait to continue building a life filled with love and happiness with you.

Happy Valentine's Day, my love.

Yours always,
[insert your name]
Write it in a more romantically and caring tone
Of course, here is a more romantic and caring version:

My love [insert name],

As Valentine's Day arrives, my heart has been filled with nothing but you. Ever since you smile had lightened up my life, there has never been a dull moment at all. 

Not a single day goes by without me wondering about your day, your safety and your health.

You bring joy to my heart and laughter to my lips, and I cherish every memory we've made. You make every day feel like a gift, and I can't imagine my life without you in it.

Thank you for being my partner, my confidant, and my best friend. I love you more than words could ever express, and I can't wait to continue building a life filled with love and happiness with you.

Happy Valentine's Day, my love.

Yours always,
[insert your name]