I'm going to give the guy the benefit of the doubt and just say maybe he was busy and forgot, or it was just a typical hearie-mistake, one that he will learn not to do the more time you spend together. I mean the guy is taking an ASL class with you, to me, that alone would be enough to tell me he's really interested.
We're not him, so we don't know why he didn't text. Maybe he waited until later because he didn't want to seem clingy, texting you all the time. Lots of girls (sisters, mothers, etc) will tell a guy one of two things: that they LIKE being texted all the time, or that they DON'T like it. The guy is probably a dud at dating, and wondering if there are special rules for deaf-dating.
Idk how long you two have been going out, and I could be totally wrong, anyway.
That being said, it's good you don't just wait around for him to contact you and made other plans. Just make sure you tell him it bothered you, and make it clear that you would like more communication. If he can't manage that then he's probably not worth it. gl
EDIT: *hug* btw 
you sounded like you needed it
