Hi Christine,
I'm new to this forum and just see this message, so hopefully still of use:
Reserve 1 weekend (at least every 6 weeks) to escape to nearby Miri or another 'deal' to explore what's around Brunei.
Seek membership at the Royal Brunei Yacht Club, IMO the only "°µÍø½ûÇø social ground" where you always bump into somebody you know.
Colleagues from work, parents at school: very diverse group here in BN, incl. some interesting characters for sure.
Hiking in the several parks: take GPS as back-up if you tend to explore the more lonely paths (99% safe, but don't get lost)
Beaches: few facilities, so back to basics and ensure you wear bug-spray for sandflies
Entertain at home: if possible you have a pool and can invite people over, to enjoy a drink and improve the BBQ skills
Hope it gives you some ideas.
Cheers,
Paul