Goras have the same issues we do…we just dont hear about them because we tend to socialize with them less.
Its very normal to be a little aloof in the beginning. Just remember, these are lifelong rishtay…they take a while to build and not everyone is born with the talent of knowing exactly what to say/do at the right time.
When Im nervous or shy, I come off as rude and anti-social. Do I want to be that way? No. It just takes me a while to open up to people and until then I keep my distance. Maybe bhabi needs some time to adjust or needs to be shown she is not an outsider anymore.