I'm convinced that love is dependent on material conditions insofar that it's different for every relationship. For someone it could be a willingness to be a better person for someone else. For others it's that you're willing to die together (soon or far off). It could mean willing to die for them. Someone else it might be trusting them with your life without hesitation. It might be building a sanctuary with one another. It could mean always being willing to learn more about them.

I think defining it against a cultural norm is a fool's game.