When you have nothing to say to your girlfriend, you can text her reminding her of an awesome event or moment you once had with her. If there is anything you do in common, like you are in the same level in school, you can ask her on some interesting topics. Just try to be creative and find something interesting to text to her.
I text: thinking of you How's ur day going Did u hear from so n so? I heart U I'm having TAco Bell 4 lunch, what are u doing 4 lunch? Did you hear so n so from such n such did whatever? I just heard this song by the so n so, it was awesome
if the convo w/ my bf dies he always says "GUESS WHAT" & I say "what?" & hes like "i love you" the best thing you can do though is text her in the morning when you wake up & say "good morning , beautiful, i hope you have an amazing day, i love you" that, is 100% adorable .