to become familiar with and cherish; to get to know and love
彼女は老犬に馴れ親しんだ。
She had grown attached to the old dog.
地元の味に馴れ親しんで、彼は恋しがった。
Having grown familiar with the local taste, he missed it.
新しい環境に馴れ親しむには、少し時間がかかる。
It takes a little time to become familiar with a new environment.