In regard to what Kalosyni's comment on always looking for new restaurants being an indicator of marriage failure (kind of funny even to say that)
More specifically the personality trait of extoversion and "adventurism":
Quotehigh extroversion can undermine relationships because it is associated with adventurism. A 2008 study by David Schmidt involving more than 13,000 participants in 46 countries found high extroversion to be “positively correlated with interest in short-term mating, unrestricted sociosexuality, having engaged in short-term mate poaching attempts, having succumbed to short-term poaching attempts of others, and lacking relationship exclusivity.”
https://www.psychologytoday.com/us/blog/insigh…r-romantic-life