Hi guys I was wondering if someone can help me, since about Christmas last year I have been having visions of someone who is not there, I never have them in enclosed spaces (such as bedroom) but if say I'm driving down the street I will occasionally see someone then get further towards them only for their to be nothing there
Tonight for example I was the passenger in a car travelling down the road, at the bottom of the road was a bus stop and I could see someone standing there who looked alot like someone I used to know from school, however when we got close they disappear

This has been happening for a while now, at first I thought it was just random objects that my eyes thought where a person from a distance however now its starting to happen more often and upon inspection their are no objects at the location that could possibly make the shape of a person.
The person I see as I said is someone I used to go to school with (he's not dead

) when he *appears* he is always just staring at me and smiling however as soon as I get close he just vanishes, the visions normally occur at night (or when its dark) apart from one time in a busy shopping centre when I saw him standing in the middle of the path just staring at me, as soon as I walked up to him he just vanishes but its like my brain stopped working while he vanishes as I cant even remember how he disappears.
It's really starting to worry be now its happening alot more often, I'm not on any medication or taking drugs, what should I do?
P.S I know this thread is probably a haven for trolls but please try to be sensible as this is quite worrying for me