Thats awesome, it must be a powerful day in your life to be able to meet a part of yourself where you have been searching for so long. I hope you have a way of saving those special memories to hold onto them a long time, and bring meaning into your life. To know family is a marvellous thing, to see parts of yourself in other people and I am happy for you that this has come about.
My only comment is to guard yourself in the early days of this situation because family or not, you barely know these new people and going a long way from home can be stressful and isolating at the best of times. If I was your RL friend I would want to know that you had a backup plan, an escape plan, and some support while going thru the journey because it's a huge big thing and, everyone wants it to go well but...what if it doesn't? The thing is if it goes well thats really good and rosy. It will be hard either way, and if it's a situation you just want to be able to get back home without too much impact on your ordinary life.
Cheering for you mate I hope your family reunion is a happy one.