Weird Hallucination?

one night i just woke up out of no where, but i was still like half asleep, then i looked at my door and it was open a little bit then just out of no where this guy peeked through the crack and he started talking to me. he looked like a combo of my uncle and my moms ex bf, named mike. and he said 'hi sam u remeber me, it's mikey.' and then i said 'yea'. then he just kept repeating 'hey u remember me sammy, it's your old friend mikey' and i just kept saying yea. then i must have just fallen back asleep then i woke up the next morning and i asked my mom if any one came over that night and she said no. does this mean some thing? it happened like 2 years ago but it just annoys me because i dont know why that happened. does any one know why i might have had that hallucination?..... and i NEVER talk in my sleep so i wasnt just talking to myself.