Why after six years im suddenly dreaming of an ex?

i met her in high school the first time i saw her.we got close in just three months when i got pick up and thrown in jail we still communicated through letters when she hit me with the heavy news.her family was moving her to texas and leaving me behind when she mention that she's in love with me. it was hard knowing something so dear to my heart was being taken away. i didn't even get a chance to say good bye.we didn't even have ual relation up this point it was more than that, it was more like a connection we had together.So...shortly after i was released "yup" i took a trip to texas for one week and let me tell you the smile on her face when she saw me was enough to illuminate every shadow in a hopeless heart it was like to feel young and hopeful again. it was good times in deed. i recall she falling to sleep in my arms as i run my fingers thru her hair and just thinking how we came a long way.it was nice don't get the wrong idea i ain't corny n ****. im just saying it was nice to see her still here after everything we had gone thru.after all i was only a small city boy chasing my heart never looking back. so little after i even notice a week wen't by as fast as five minutes. (one month later) i found out we are expecting a kid. happy at that point in my life i made new plans in seeing her again. (three months later) im back in texas just to find out she had a miscarriage. another week had gone by so fast but it was a good week, so.... here we go again she's pregnant im going to be a father when i get the news. a second miscarriage will things start going down hill after a month she stop answering my calls. soon after a month i got a phone call from a private number, sure enough it was her explaining how she cant deal with a long distance relationship and its not cause she dont love me she explain its cause she cant deal with the long distance.i simply said ok and bye...... a get a private phone call four months later i answer to my surprise it was her but she sounded upset that i answer and quickly just said i dial the wrong number and hung up. i guess she thought i change my cell number sense i was off air for a month do to billing complications but soon after she hung up she called back saying hey in the most softest friendiest voice but being hurt as i was i told her i was busy and hung up. now after six years im dreaming of her for no reason at all.what does it all mean. can any one help and enlighten me in why after so long i just started dreaming of her