If you have house plants what's the longest you've ever kept one alive?

In 1982 a friend of mine gave me a sweetheart plant, I still have it.

15 years and counting

I bought a small sago palm that was in a 4 inch pot while living in Virginia around 2004. It moved with us too many times to count. A couple of times it had one very sad looking frond. I  repotted it a couple of times. It made the move back to Florida. Somehow with the remodel it made it outside along the side of house forgotten. While cleaning up the yard, I found it. It was thriving! I repotted it one more time. Still thriving when we moved again. That move was supposed to be our last move. I planted out in the front flower bed. It was over 3 feet across. As far as I know it is still there doing well.

I kept an Aloe Vera plant alive for many years. My sister gave me a sad looking baby that came off of her plant. So I named it and it thrived. I think I lost him when we lost most of our stuff back in 2011.

A thousand years ago I purchased a souvenir castus plant, about three inches tall, for $1 at a roadside stand in Arizona. Ten years later it died in a house fire. It was well over five feet tall with three branches.