I had a dream about my grandpa and wedding day?

I had a dream it was my wedding day, and I was in a really beautiful dress. I was under the impression in my dream I would be marrying my current boyfriend. So one part of my dream I'm with my cousin, and he's a year older than me. For some reason it seemed like we were getting married around the same time and were sharing the same celebration day idk. So I'm with him and we hug, and then I leave. I'm on my way to were the reception or ceremony is held so i'm in a car, but I'm not driving. So I see we drive past this building and in the window I see my grandpa in a wheel car. I make them stop the car because my grandpa has been dead for the past 6 years. I get out and go into the place, and his nurse wheels up my grandpa and I'm just sobbing because I haven't seen him. So I'm in a wedding dress and he says, "So you're......23 now." and I start crying more because I didn't expect he'd get my age right, I just turned 23. So I don't really remember what else we talked about but I was under the impression I was telling him I was getting married and I was marrying my boyfriend. I remember looking out a window and thinking to myself, "If I knew he was here the whole time I would of visited him more. but I thought he ped away." So then my brother and my other cousin, and my mother are there to speak to him. And he isn't in a wheel chair anymore he's like in an Ipad talking to us through a video and I don't really remember what anyone was talking about. I then woke up, and teared up a little. WHAT COULD THIS MEAN.. soo weird it was very intense.