Possessiveness kills
relationship like how one attempt suicide with carton monoxide - it
kills unconsciously. Usually, it is not just problems that derive
from POSSESSIVENESS itself; rather, it is the integration of
mindset, attitude and experience which developed the possessive
tendency/personality in the relationship that inflict intensity
into your Love.
Possessiveness is 'negative' care with 'positive' intention. To me,
it's pure rubbish when someone tries to justify possessiveness AS
love. In astrology, when Venus is afflicted, it produces much petty
jealousy and possessiveness. Therefore this Venus is no longer the
Venus we thought all beautiful and loving. God can be a God of
Justice or a merciful, loving God... there are always two
sides.
Have you ever seen newspaper article/s, about one murdering his/her
other partner, in name of Love? More often than not,
possessiveness/jealousy is the crucial element involved in the
reason WHY the tragedy happened.
The tighter you grip the relationship, the easier for you to
puncture a bleeding hole.
Only the unenlightened sees Love as a commodity, as simply being
together or merely our own needs.
Love is
freedom.
And only through freedom will a relationship blossom beyond your
imagination. 
Cheers
