Randy Pausch said this quote

If other people owe you an apology, and your words of apology to them are proper and heartfelt, you still may not hear from them for a while. After all, what are the odds that they get to the right emotional place to apologize at the exact moment you do? So just be patient. Many times in my career, I saw students apologize, and then several days later, their teammates came around. Your patience will be both appreciated and rewarded.