Final answer:
Gay men and lesbians in long-term intimate relationships have similar levels of relationship satisfaction, commitment, and emotional closeness compared to heterosexual couples. Same-sex marriage legalization has had positive outcomes for the emotional and mental well-being of LGBTQ individuals.
Step-by-step explanation:
Research has consistently shown that gay men and lesbians in long-term intimate relationships have similar levels of relationship satisfaction, commitment, and emotional closeness compared to heterosexual couples (Bell, Weinberg, & Hammersmith, 1981; Ross & Arrindell, 1988).
There is no evidence to suggest that gay men or lesbians have lower relationship satisfaction, less commitment and intimacy, or a higher likelihood of infidelity compared to heterosexual couples. Studies have also shown that same-sex marriage legalization has had positive outcomes for the emotional and mental well-being of LGBTQ individuals (Johns Hopkins University, 2017).