Online Dating and Texting

I am new at online dating and I met this really great guy. We have gone out on three great dates, all lasting two hours plus of conversation. He told me that he really likes me and we’ve kissed. He wants another date. Currently, he’s away. Well, what is bothering me is the texting. I always initiate the texting and he never texts first. When I send him a text, he responds back with long texts, but then he drops off after about 12 exchanges. He admits that he forgets to look at his phone because he silences it for classes and work. Does he not truly like me?