Friend of a friend on Facebook on a few occasions now has sent me late night messages, always fairly innocuous like 'Hello how are you?' but when I reply the next day he either ignores or gives a one word answer but then a few weeks later will send a similar message.
This guy is someone I don't know well and actually have always got the impression he didn't like me much as he's fairly aloof whenever i've seen him in person so don't know why he keeps doing this
Obviously it's not really a big issue, I've just started to ignore and not bother replying but find it a bit strange