Yizhao was the 1st to comment on this..

"I'll try not to get jealous..'cause after all, jealousy happens because you're infatuated with that someone and not love.."

Ok...
let me attempt to clarify myself.

In 1 Corinthians 13: 4-7 of the King James Version of the Bible it is stated:

'4Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,
5Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
6Rejoiceth not in iniquity, but rejoiceth in the truth;
7Beareth all things, believeth all things, hopeth all things, endureth all things'

In another translation (which will seemingly be easier for you all to understand):

'4Love is patient, love is kind. It does not envy, it does not boast, it is not proud. 5It is not rude, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. 6Love does not delight in evil but rejoices with the truth. 7It always protects, always trusts, always hopes, always perseveres.'

Jealousy as defined in the American Heritage Dictionary means:
Having to do with or arising from feelings of envy, apprehension, or bitterness

So the obvious recurring word here would be ENVY.

Need I explain more?