y do i dream about him??

so lastnight once again i had another dream about my first love....we were together for like 4 years in middle school/high school....we broke up my junior year and ever since i left for college i have had at least maybe 2-3 dreams about him a month....why am i having dreams about him like this???...i mean i wont even be thinkin about him like at all and then later at night he pops up in my dreams....in most cases in the dreams we end up gettin back together or we r talkin about gettin back together but in lastnights dream he wouldnt even talk to me....are these dreams a meaning or something???....or is it something deeper???....i very much still love him but we r in completely different states and i havent seen him since b4 we graduated high school......what is going on up there in my brain????.....does this happen to n-eone else???