help with a note to boyfriend?

My friend asked me to help her and I'm at a loss. Her and her boyfriend have been dating for a few months (they have not said "I love you" yet.) and he is going to work a long shift tomorrow and she said she'd pack him a lunch for it. She wants to write him a sweet note saying she's thinking about him, here's a special lunch, etc. but doesn't know what to say without sounding ridiculously corny and too mushy. She asked me for help but me and my hubby haven't done something like that in ages. Any ideas on what she could write? Thanks.