At a time when more Americans than ever are carrying debt throughout their lives, nearly 1 in 5 are hiding information about the money they owe from their partners, according to a new report from insurance site Haven Life, first obtained by CNBC. Additionally, nearly half of Americans would rethink their relationship if they found out their romantic partner was holding out on them when it comes to secret debt. For those who would ever treat financial secrets as a reason to rethink a relationship, a whopping 70 percent set the threshold at $5,000, less than the average household credit card debt of $7,307. The study was conducted for Haven Life by market research firm YouGov with a nationally representative sample of 1,124 adults in the first quarter of 2015. The survey was carried out online.