To yearn deeply or pine for someone; to be consumed by love and longing (somewhat literary and emotionally strong).
彼女のことを恋焦がれて、毎晩歌を書いている。
Pining for her, he writes songs every night.
遠く離れた家族を恋焦がれる気持ちは簡単には消えない。
The longing for family far away doesn't fade easily.
長年彼を恋焦がれてきたが、やっと気持ちを伝えられた。
I had long yearned for him, and at last I was able to tell him my feelings.