Jukti Ji
Being friendly lead to friends...and you make the choice to get even closer or just "Hi, Hello" buddy at work. I've switched many jobs and am still in touch with the first job buddies. Most of my friends are from this or previous jobs. I'm talking about dinner, bbq, fishing, hiking and many travels with families just like you said. Few selects are even X-Mas, thanskgiving, one of them I took to Nepal with me. It's all up to you. It worked  for me, why not you? Maybe you're not comfortable to be around people, invite them at you place or you don't trust them. Nothing will work if you cannot come out of the coccon of Nepali friendship expectation. I return things that I borrow from friends here, pay my own dinner, not expect anything from them except companionship.Friends in Nepal is very different than friends here, however the bottom line is the same. Some to hang out, count on, get help and trust. That's just my view, you can disagree. With that said, I'll leave you in peace and good luck with future and friends.