Final answer:
Unable to provide an accurate response to the fictional or non-biblical breakup of David and Sebastien using biblical references that do not mention this story.
Step-by-step explanation:
The question seems to be seeking information about a fictional or non-biblical story involving characters named David and Sebastien. However, the references provided are from the biblical accounts in 2 Samuel, which do not contain a story about a David and Sebastien relationship or breakup. The references listed recount various actions of King David from the Bible, including military victories and personal misdeeds. Without the proper context or source for the scenario involving David and Sebastien, it is not possible to provide an accurate response to what David did when Sebastien broke up with him. As a history tutor, it is vital to clarify that the references given do not align with the asked question and that more information would be necessary to answer adequately.