You can be equally commited to someone without being married. I lived with my partner for seven years before getting married (and shared our accounts and incomes) and honestly marriage didn´t change a thing. My wedding day was quite uneventful and I have to make a concious efford to remember the date! To be honest, the only reason we made it "legal" was so I can come to Qatar in a family visa and things would be a little easier as he would get transferred to different places over the years.