Mine was 4 years, an LDR. It ended very badly as I found out he was cheating on me. He even told me he wanted to leave me 2 years into the relationship, but dragged it on thinking things would 'just work out' rather than address any of the problems we had. He ended up choosing the other girl over me, and everyone disapproved, including his family. Things got so bad he just packed his things and moved in with his new girl and her mother into some run down old trailer.
Total coward, looking back on it, I did way more in the relationship than he ever did, and he was very self centered, only wanting sexual gratification for himself. But he was my first bf and i was completely blind, so it's my own fault. Just very glad I never ended up moving over to him.