I need that "spice " back with my boyfriend please help?

Okay me and my boyfriend have been dating for ten months. I love him so much. I adore him. We have been in ups and downs, and in no way perfect. He has had some doubts in the past, but he said he will step up and become a better boyfriend, I have had my trust issues with him about this. he is immature, were young. Hes my best friend. But sometimes I feel like maybe I over do it, Im too available. But he is also sometimes not there. There are sometimes I feel invincible with him. But sometimes I feel like he's not there. I just think there needs to be some adjustments. I feel hurt sometimes, like I try so hard and i get half *** back. But when I look back on it maybe im just paranoid. But at the same time, hes in the wrong. I'm not gonna break up with him. I think wever come too far too. But Id like some advice on what to do. Some of the examples are I tell him to text me when were together he doesnt for like four hours, or sometimes its right away.Its like bi polar.I just think Im the one to always take that extra step. How can I get this out of him?? I know its possible, he was the one who wanted to date badly when we first started talking. How can I stop being paranoid? Advice would be greatly appreaciated! :) Also maybe some advice on how to get that excitement back into him, he likes chases(you know what I mean) howcan I be lovable but still have him on edge;)