What does it mean when a guy texts you goodnite?

I juz made frenz with the him and he would start a conversation on fb. Then, one day, he asked for my number. Well, having a crush on him, I gave it to him... ( is that a sign if the guy liking me?) Aft that, he took a really long time , before texting me... ( Do guys always do that??) So we chatted till' midnight... Aft that, I had to go... So I texted him," Sry....Gtg, bye! :)" But, an hour ltr, which is 1pm, he sent me ," Good nightxyz Alicia !(:" Does he like me?? But he told me he has a crush on another girl alrdy, wad should I do?