Love is good, in fact, it is by far the best thing you wish to feel and be felt for throughout your existence on earth. But on the other hand, love can harm you ‘real bad’.
How two best friends, brothers, closed friends, relatives, etc. who were bounded by blood, trust, etc. suddenly become worse enemies to one another that one seek to destroy the other, because of love (they both love one man/woman and desire to have him/her to themselves, and it tear them apart).