What can one classify as love

People see love differently. That is a fact. For instance a few days back a friend was telling me about her child that offers her and his dad a huge love. He is engulfing them with love. But what she perceives as love is how her son gives her the best and most expensive things when they are together. 

But can one put a price tag on love? 

I believe that anyone in love wants to provide for their loved ones and they do. The degree in which they provide is highly depended on their possibilities of doing that, of course. Wanting to give the loved one the best things comes natural to many of us, but is providing equal with love? Or rather is protecting equal with love?

How do older couples feel; couples that have been gone through life for 20-30 years? What is it that has been holding them together all these years? A contract or... love?

I read in the news a few months back that the German scientists consider love a mental disease that will go away naturally after three years. If that is so, why many couples stand tall and say they are in love and will always been, when is scientifically thought that love is going to fade away quite soon? 

Shouldn't a relationship be based on respect? On trust? And on pure friendship? And just afterwards on love? Because if it would have been so, from all these four, just the love with naturally go away. People would need to work quite hard for the others to go away. 

Is it easier to "love" for those for grow (up) together?

Can you label love, such as: "I love him/her because he does this and that for me" etc? (personally, "I love him/her because he/she is handsome/beautiful" seems like a bad  joke. But hey! perhaps people also have such reasons to love.) 

But really now... Can you label love?