The phrase "Tsuma ni damatte sokubaikai ni ikun ja nakatta" suggests that the speaker regretted going to a love hotel with another woman without their wife's knowledge or consent. This phrase implies that there are unspoken rules or expectations within a marriage that govern behavior, particularly when it comes to infidelity.
While the phrase sounds regretful, it often carries a hint of "but I'm glad I got the goods." The key to a happy marriage and a thriving hobby is balance. Don't let the sokubaikai become a source of domestic friction. tsuma ni damatte sokubaikai ni ikun ja nakatta