This assumes love is binary. Shouldn't it be analog? Maybe Person X really does love Person Y, they simply love Person Z more. (Assume for the sake of argument that Person Y and Person Z don't feel anything for each other, or else there's no real problem [Yay polygamy!])
then for person X and Z its game on and person Y needs to look around for someone else. I would still value the experience and time shared if I was person Y. I suppose I was leanin more towards true love, but thats kinda where I was going with the comparison of what holds more value. True love vs money. Regular love could be a feeling for a family member or close friend. I put true love above that.