1.tell her she's beautiful . especially when she leas expects it. ex : you're beautiful
2.leave her cute text/voice message to wake up to
ex : "i love you so much, have a grat day"
3.sing to her
4.write her notes. adorable ones
ex : "hey baby did you know i love you so much ? blah blah blah
5.tell her jokes even if they're lame
6.unexpectedly text her telling her you miss her
7.tell her sweet things.... a lot
ex : "you mean the world to me" or "i love you" or "you're amazing"
8.make her feel special
ex: you're my only one