Going on 11 years. Went through some pretty crazy shit through and after college with him, and some pretty hard/tedious parts (Was a long-distance relationship for a good 3 years- 2 years after we met, and a year when he went home to be with his mother while she had cancer.) A lot of dark passages to work through, though it really all boiled down to money and the two of us still figuring out what we want to do with life.
There may come a day where one of us/both of us decides things are different and that we're better off splitting up. Nothing's concrete. Been there a few times. But our last few years have been our best years, as agreed by committee.