declare oneself declare oneself /dɪˈkleɪər wʌnself/

verb

1. Ask (someone) to marry you  ( declare oneself , offer , pop the question , propose )
   ask (someone) to marry you
    He popped the question on Sunday night
   he popped the question on Sunday night
    She proposed marriage to the man she had known for only two months
   she proposed marriage to the man she had known for only two months
    The old bachelor finally declared himself to the young woman
   The old bachelor finally declared himself to the young woman