I think the definition of a harmonious relationship is when two people meet each other who are both willing to put forth EQUAL amounts of effort (at all stages). Too often it's a one sided scenario - One person is always engaging, asking questions, trying to get to know you, thinking of fun things to do, trying to be closer - and the other is just along for the ride.
(Sure, I'd love to lug you through this relationship...)
There are a lot of ways you can show effort and make the other person feel like you care. For starters, respond and give attention to your texts messages. A one or two word response, or closed ended response two hours later makes it kind of a one sided deal - (Also, it either means you're just not really that interested, or you're stupid and don't know how to communicate with the written word - Neither are good) You're expecting the other person to do all the work and being lazy! They should be talking WITH you, not AT you...
Even if you're busy, letting someone know that you'd like to chat later goes a long way.
It's rough when experience has taught us that the less effort we put into it, the more the other person will like us; but why do we have to be jerks just so you'll pay attention? Why does the fact that we've ignored our text message for a few hours make us more desirable? It should be the other way around; the lighting speed at which I respond to you should make me that much more appealing. Look at how fast my fingers move!!
(I texted too fast...)
Tired of the game
-Clever Alias