squander (something) on (someone or something)
To waste some resource by using it for the benefit of someone or something. I can't believe I squandered the best years of my life on you! So you're telling me that we squandered half a million dollars on a new infrastructure that is already outdated?
squander something on someone or something
to waste all of something on someone or something. I am tired of squandering money on this rickety old house. I squandered a fortune on Roger and what did it get me?