Bettas are like potato chips- you can't have just one!
I got my fist Betta, Loki, as a Christmas present back in 2012. Before I knew it, I had three bettas in my little attic bedroom. Unfortunately, Loki and Ralph didn't survive the move that I made a few months ago, so I had to take Little Joe, and start my collection almost from scratch. I've since added a little betta named Magneto to the family.
If you're a good owner and you pay attention to your fish, each fish will live longer than the last.
Good luck, and have fun!
P.S. If you have any questions, feel free to PM me on here. I work at a Pet store, so every question I get is like studying for a test. :)