Notes are a good way to show your love. It doesn't have to be long, but it does need to be sincere and of your own writing. Not something you ChatGPT-ed. I doubt you remember, but last summer before camp, you gave me a note saying that you will love me forever and are always with me. It's still in my wallet and I read it when I miss you. Goodmorning notes before I wake up so I have something sweet to read or messages after you know I have fallen asleep are also good examples. Or maybe you take some post-it's and you go to my locket between classes where you know I am not there and put them there for me to see the next time I am at my locker. Maybe you write some "open when..." notes for me to have at different times. All of those are great examples of written ways that you can show love with the words of affirmation love language.