loolz. he/she is looking up exes. probably has no clue there is a facebook search history log
"To review your search history, go to your Facebook profile, navigate to the "Activity Log" button on the right-hand side of the page, click the "Search" tab in the column on the left-hand side of the page and gasp in horror. (To find the "Search" tab, you may need to click "More" under the section that begins with "Photos.") You can delete individual queries or clear the search activity by clicking "Clear Searches" at the top of the page."