after a break up

The awkwardness begins right after the breakup. Whether you discover your ex's email address while trying to log on to facebook.com in the library, or you are caught off-guard by a familiar pair of feet in the stall next to yours in the bathroom, running into your ex is inevitable and almost always uncomfortable.You both hate and pray for these happenstance meetings. You hate seeing him or her with someone else; a happy smile written across his face as a result of either being with someone new. why is it so awkward after a break up, especially when the last line of the break up was "let's be friends" I never understood why relationships can be so complicated at the end. It's like if you had feelings for the person why just cut them off why not just be friends with them. I think its awkward because the feelings for one other aren't the same any more. My point of view on this is ridiculous and I think the awkwardness can be broken.