Delicatefade, I am sure he won't give you the boot for one text, but since you now realize that may have been a boundary crossing, you can refrain from doing it again until you work out that boundary with him. In the meantime, if you need to talk with him again, can you just call, as the two of you agreed? If he told you it is OK to call, then I am sure it will be OK to leave a voicemail if he doesn't answer. I hope you hear back from him soon.