Giving your girl that last little memory of you before she heads off to bed is enough to keep her excited about you all through the night. Sending her a good night text message is a sweet, thoughtful way to be at the top of her mind and feel warm and fuzzy about you. If you want her to think of you morning, noon and night, send her off with sweet dreams with a text goodnight.
Write out your message ahead of time so you know exactly what you want to say before you send it. Decide if you're going to send a sweet, romantic, funny or inspirational message to her.
Say something like, "Hope you get good rest tonight, can't wait to see you in the morning," to take the sweet approach or "William Shakespeare says 'Good night, good night! Parting is such sweet sorrow, that I shall say good night till it be morrow,'" to show her that you're a hopeless romantic.
Avoid sending her a long message. Limit your message to one, no more than two separate messages so she's not bombarding with a string of your messages back-to-back. Keep it short and sweet to let her know you're thinking of her.
Time your message to reach her at the right time. Send your message when she is getting ready to go to bed. Avoid sending the message too early where she's not going to sleep any time soon but not too late where she won't receive the message until the morning.
Add a signature line to your text if you don't normally text her or if perhaps she does not have your number saved in her phone. Rid the risk of an awkward execution by her responding back, "Who is this?" Add your name or nickname she would remember to the end of the text.
Type your message in to your text block. Read your message aloud and double check for errors. Press send when you're ready for her to receive your message.