I was also wondering the same thing. My boyfriend loves the Gouramis and I love my betta. I was considering buying a Blue or Yellow Gourami until I researched them a little bit more and found that bettas and Gouramis are a lot alike. I was afraid that one would kill the other due to their aggression levels or fight over surface space or something along those lines.
Gaeta - Blue, turquoise, and purple male VT