Emotions

Have you ever wondered if all our senses are identical and true to our beliefs?

I've a theory which in practise is a proof of love as an emotion which seems so difficult to understand.
Lets assume you and I were born to common parents, who gave us our ground level training. One day they showed us a sunflower and taught us that it is yellow in colour. You saw the sunflower and saw a colour (yellow), however i saw a different colour (lets say colour x). So in future every time there is a reference to the colour yellow, you see the colour (yellow) and i see the colour (x). Now based on this argument, what is the guarentee that we both see the same colour and perceive it in the same sense?
And this precisely is the reason why we've heard a lot of them ask "What the hell did he see in her that he is in love with her?"
love is an emotion which can be described between two living organisms with a similar vision (with reference to the above vision theory).
Vision theory could be translated into all the senses theory together and form a single emotion.