(Also I'm always the one to end the text conversations though)
This is probably why he doesn't really text first...
Most Helpful Guy
who cares who start first as long as u two are having a good time.. replying fast mean he is waiting for u to message... for a check skip a day and see how he respond
Most Helpful Girl
Guys aren't usually into text messages like we are. They dont usually see it as a means of having a conversation. He will probably only instigate if he has something important to tell you (eg I'm running late). The fact that he text's you back tells me he is very keen on you - many girls have texts that go unanswered. I'd suggest dont wear him out with the texts (eg if you feel the need to send more than 2 in a row then just call him or meet up with him).