Here's the point when passion leaves a relationship

London: Once your relationship hits the one year mark, there is a drop in the level of sexual satisfaction you feel, as per a recent study.

Researchers at Munich's Ludwig Maximilian University assessed data from the German Family Panel study involving 3,000 people, focusing on heterosexual people in committed relationships aged between 25 and 41.

The study found that sexual satisfaction rises in the first year of a relationship, but then declines from this point onwards, The Telegraph reported.

However, the evidence did not suggest that marriage and cohabitation affect sexual satisfaction and found that children also did not seem to have an effect.

Instead, arguments and domestic disagreements were the root cause, with a decline in sexual satisfaction showing links with a rise spats.

Study author Claudia Schmiedeberg said, "We did not find that having children played a major role in a couple's sexual satisfaction, which is remarkable as research has shown that sexual frequency is heavily influenced by the existence and age of children."

The study is published in the 'Archives of Sexual Behavior' journal.