As we saw in class, the roommate’s problem does not guarantee a stable match. We can use this result as an analogue to same-sex marriage. This means that, whenever a stable match does not exist, gay couples will be changing their partners over time. Data suggests this is true. Gays and lesbians tend to have a higher sexual activity during their lifetime than their counterparts (see graph 2 of the first link). But what it is really interesting here is that gay divorce rate is slightly lower than opposite-sex couples (check the second link). So, why, if they are more promiscuous, they do not have a significantly higher divorce risk?
In my opinion, opposite-sex marriage was created in a time when there were no effective contraceptive methods to avoid overpopulation. This is the reason why fidelity is so important to heterosexual couples. They also inherit us a negative view of sex as a sin. Instead, gay marriage has been approved just recently, therefore, they have a more “modern” kind of marriage. As we can see on the uploaded image, same-sex couples tend to account more other variables rather than love to get married, such as financial stability and legal rights and benefits.
Sadly, while investigating this topic, webpages uses this promiscuity as an argument against same-sex marriages.