Love n Jealousy?

I read a friend's post in the morning and have been thinking about it ever since.According to him, you can get jealous of those you love alone and that if jealousy is a useless emotion, so is love-for that's exactly where the jealousy stems from! True?? I disagree. For simply enough- Jealousy is a vile emotion and a negative influence for the thought process It has absolutely no link with love. Love is simply pure and if its not- You have to know that it wouldn't be love!
When you love someone- if you give them enough space they'll reciprocate and its fine even if they don't. That's because you chose to love the person.NO one held a gun to your head for that!
When i think of love- there's one beautifully pictured song that comes to my mind instantly and reminds me of why love and jealousy are not two sides of the same coin.
The song is Tumse hi from the movie Jab We Met. The song shows a guy who really loves the girl. but she's promised herself to someone else. He imagines her presence everywhere and knows he cannot have her. Painful? It should have been- but its not. And that is because he loves her. He knows he wont have her for life- he still loves her. Her memory is enough to get him through his bleakest moments. That's the purity of the emotion.
Ofcourse, you might turn around and say,"hah! that's a movie- doesn't work in real life".To that it may be true or not. But what i do believe in for sure is, your heart is like a expandable sack, It grows as you love!:)