Jannet:
Much like yourself, I tend to withdraw from local society. I find comfort in talking to my online friends, and when I have had enough for my anti-social nature, I can freely turn off the computer (no offense to all my beloved friends). That is just me.
Over the years, I have done likewise, pulled away from people I know locally, including some family. I don't bother with others in the world beyond my doors. I like it like that. Peace. solitude. Then again, if you look up my birthday, it will say I am the type who is ok with being alone..
I get my giggles in the chatroom with the antics of bun bun (sofia), Eden, Katie, Otter, and the beloved others, I speak to when I go in there.
pulling away from those you knew in your old life is not such a bad thing, sometimes, you need to clean house , when moving to a new life elsewhere

. too many times, if you take the baggage with you, it only gets in the way.
my motto was : new life, new friends. I had to measure up their qualities and their understanding of whom I am , none, sadly met the standards of acceptance and have since been replaced with more accepting friends. as harsh as it sounds. it was needed in my case.
But in all this, I want you to know, don't feel bad. embrace your newfound friends, and make more! should there be any from your past, don't let them in, unless they accept you for who you are and are destined to be.