amazing things happen when you least expect it

So what is it that makes us feel something for someone we've only met for a short time? What is it that when it happens some of us feel happy about it and for other's it's a scary situation? Honestly i couldn't tell you but in my opinion i think it's something more out of our control no matter how hard and how many times we tell ourselves "i won't let it happen" or "i'm just looking to make a few new friends" it just happens and it happens for a reason but what reason is that? Is it something that is deep in our subconscience that even though your not tryin to it still always happens or is it something that is controlled by a higher being that is mapping everything out for us? who knows, will we ever know what's behind something like this? hard to say but who ever or what ever it is all i can and will say is THANK YOU.