texting

Soooo.....
My boyfriend texts me whenever he likes. Because I have my phone set for a certain tone and vibration I always know when it's him. And I answer. Right away. Almost everytime unless I'm sleeping. 
Is this a bad thing? I've always got my phone on me and I generally respond asap to everyone, but I'm worried he takes advantage of it. Like I texted him right back seven hours ago and he hasn't responded.