expression, godan verb (-ku)
old love rekindles; embers of a past relationship flare up again
Idiomatic expression comparing a rekindled romance to a burnt stick that catches fire again. Often used when former lovers reconnect.
十年ぶりに再会した二人は、焼けぼっくいに火がついたように急接近した。
After reuniting for the first time in ten years, the two quickly grew close again, like a burnt stick catching fire.
They say old love blazes anew, but I think you shouldn't get back together with your ex.