Please, please, please live up to your words. Do not call or email or text him today. No contact, no mailing him a belated b-day card nothing. Make it through today without any of those things. Not for him, but for you.
You can do this, use your thickheaded stubborness to your advantage. : )
Experience is a brutal teacher, but you learn. My God, do you learn. - C.S. Lewis
Life is usually all about how you handle Plan B. - Jack3Beans
Listen without defending; Speak without offending - FaithinAK