How many people are we talking about? There are 7 billion people on the planet, ya know?
I've sometimes run away from people I love dearly or like a lot, just cause of feeling overwhelmed or busy with other things... So it may be nothing personal... Those people may return (some of them) or you'll meet new ones?
On the other hand if it were true for everyone, mikey what have you been doing?

(said tongue in cheek

I know that I sometimes chased people away too, usually I'm at least somewhat aware of what might have been a factor...? Or you could ask a trusted friend maybe, what's up? Maybe they were just busy with own life...?)