House-

You surprised him with a kiss before he left.
Wilson-

It was cold outside so he gave you his hoodie he keeps just in case. You decided to show your thanks with a kiss not that he's complaining.
Foreman-
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He had enough and decided he'd confess with a kiss.
Chase-
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It was during your break at the hospital. He came out seeing you alone on a bench. You weren't alone for long.
