Regarding your edits to Ellen Pompeo and Patrick Dempsey 

I have reverted your edits to these two articles. Please review WP:V to learn about appropriate, reliable sources for the information you keep adding, and also visit WP:LIBEL and WP:BLP to learn about appropriate information in biographical articles of living people. Insinuating that these two individuals are having an affair or are anything other than faithful to their respective significant others is libelous, and against Wikipedia policy. You have not provided a reliable source to support the POV suggested by your edits. WP:NPOV will help you learn about Wikipedia's neutral point of view policy.

The quotes you have added are taken out of contexttheir mentions of a "crush" on each other were done in a joking manner, and another cast member followed their comments by saying she had a crush on both of thembut that's not grounds for speculating that the cast member in question is having an affair with both of them, and if I said or insinuated that she were, that would be libel. These quotes are cast members speaking highly of each other, and frankly, good public relations by supporting their on-screen chemistry and by extension, that of the fictional characters they play. Many other cast members have complimented their co-stars, including PD and EP, but no reliable source has, to my knowledge, ever published information that these two (or any other cast members) were anything other than co-stars who happen to be friends. On the contrary, both speak frequently of their significant others in high esteem (in print and on camera), and speak well of each other's partners. There's also a question of whether such compliments are even relevant in the grand scheme of the article, but that's a moot point because your edits are unsourced, and against the WP:LIBEL policy.  If you have a reliable source for your edits, in accord with WP:Verifiability, then it's a different story, but as it is, your edits are potentially libelous and not in accord with Wikipedia editing policy.