A couple introduces a third person into their relationship… or do they?
6.3
1980
6.4
2003
6.2
2007
5.7
1986
6.6
1993
6.9
1999
5.2
10.0
2025
5.5
2004
4.9
1976
2005
4.4
2020
2024
4.5
1988
0.0
2023
3.5
2006
7.0
2021