What to write in my bfs year book??!?!?!?

ok so year books are coming out next week, me and ny boyfriend have been "official" for 2 months but have been pretty much dating for way way longer. we have been through so much hes helped through lots and i really love him, he knows that. im not the most sentimental person there is so i have no clue what to write in his year book i want it to be special and meaningful any ideas?? i love him so much i dont kow how to put it in words WHAT SOULD I WRITE?! i dont want to look back on it and it be realy stupid i want it to mean sonething in years to come ~~~~Thanks~~~~!