Promise, it doesn't always have to be awkward.

Everyone knows that certain situations are notoriously awkward. Or seeing a guy or girl after said situations, or that girl or guy you had a crush on can be just as awkward. But it doesn't always have to be that way. The trick is not to let any previous encounter go to your head too much. What happened, happened. If you are happy (but possible nervous) to see the person, then act happy to see them. Most people will hard to find fault with that. If it's someone you don't want to see, truly, ever again, and avoiding them seems to be out of the question, you don't have to walk past with your head pointed the other direction or so focused on your phone that you'll miss the wall right in front of you. Just glance and wave or say a quick "hi" while you continue walking. No added pain necessary.