Need some help

Li

Okay so I need some help here. Mine and my bf 1 year anniversary is coming up soon and I would love to write him a sweet letter to go with the picture/picture frame I got him but the problem is I SUCK at writing, I’ve just never been good at writing stuff can never make word come together good in my head and put it out on paper, so does anyone have any ideas or recommendations of like apps or websites I could use to help me out?