Love

You love the game. You love that pomegranate. You love your sister.

You are IN love with your gf.

Yes, I know there's a difference between 'in love' and 'love'. But once again, can you:

Love your sister like you love your wife?

Note, I never said in-love. Two different values towards each. If you value your wife more than your sister, so be it. If you value your sister more just because she's from the same tree as you, understandable as well. If you treat them both as equally, well, personally, I find that just being naive. If I had a wife in the upcoming future, depending on how close my bond is with her, and assuming I had a sister, I would of course care about my wife a bit more.

New question:

Can you be in love with your sister like you're in love with your wife?

This =/= the above, and the answer is obvious unless you're really into incest.