muse over (someone or something)
To ponder thoughtfully or distractedly about someone or something. I keep musing over what Tom said the other day—could it really be true? She mused over Jonathan and his dreamy blue eyes for the entire car journey home.
muse over someone or something
to reflect or meditate on someone or something. We were just now musing over Sarah and the way she has changed. Tom is so strange. I was musing over his behavior just yesterday.