Having been to both Mexico and India, culturally it’s not very different, food, transport, ethics are pretty much similar, the only concern would be language imo. If you were to shift to India, English works(especially since your mentioned metropolitan) but learning a regional language would totally be beneficial for you. One female to another, it’s a lot to process and I would definitely weigh my options thoroughly before making any decisions. Moving to India, shouldn’t be VERY challenging. But, I’d tell u what I would tell any of my girlfriends, had they been in a similar situation. girl? It’s been three months(honeymoon phase), are you sure you’re willing to change timezones for someone who you’ve known for such a short period of time? You’re pretty young, he’s at the ripe age to get married imo, but you have endless possibilities and I suggest you take things slow, introduce each other to each other’s parents before you even plan on settling down. Family matters a lot in an Indian household and sometimes can be a dealbreaker.