Two years or so. Dated in college and got married upon graduation. Though we role played and fantasized about her hot wifing or cucking we were both surprised when it actually occurred within a couple of months of getting married and moving to our first apartment and starting our careers following graduating. Have enjoyed the lifestyle for 40+ years - off and on depending on where we were at the time in our lives such as child rearing (our sexual adventures slowed but didn't stope entirely) or later as empty nesters (she's more like a teenager).