An old flame is a person that somebody has had an emotional, usually passionate, relationship with, who is still looked on fondly and with affection.
I saw my old flame the other day and she looked great.
di Gataki 24 gennaio 2009
commonly used term for an ex lover, usually a female.
ah, shit. It's my old flame.
di Adrian 18 febbraio 2006
a former lover, a former spouse
Her old flame was fond of Chardonnay.
di The Return of Light Joker 12 agosto 2009