Texts I can send him to make him melt?

its a very complicated situation, but we're basically boyfriend and girlfriend. tonight about 30 minutes ago I sent him a text that said "good night... dream of me" what will he think of that? so he liked when I sent him one that said "I'm thinking of you" and tonight I also asked "r you thinking about me?" he said "i was" and thought it was really sweet. I like to send him stuff like that because then he knows how much I care about him, I also sometimes get these from him, so what kinds of things can I do to get a conversation going, and to make him speechless?

i want suggestions... not reassurance... or telling me not to just text him, he lives far from me and we don't see each other much, so we text.