It'll go: Dear Boyfriend, Please call me, because you haven't since Tuesday, and I'm sad. Sincerely, Lisa
I've been trying to, but no one's been answering, and I know he isn't avoiding me because he doesn't have Caller ID.
try a more positive approach, rather than giving him the responsibility of making you happy: I am eager to hear your lovely voice again, Donovan. I'll be around (time frame).