Emotional during wedding

Me and my bf are in a LDR, and he's supposed to move in my city in couple of months. (I'm 22 he's 26). So today we were on a wedding, and my whole family was there too, so during some moments I was sooo emotional (almost started crying), it's not because I was that happy for the couple (ofc I was but they are just our neughbors, we're not family of someting). I was so emotional and thinking like: I want this to be us, and I want us to have a wedding, first dance, saying I do and stuff. This has never ever happened to me before and we were on tons of weddings before, but this time things got so emotional for me, like I realised I want this for us. I have a job and I am supposed to graduate from college in june next year. And I feel I am still young to get married and start a family, but on the other hand today I really felt like I want that... Sorry for the long post, but it just really hit me, so am I the only one who ever felt this way? 🤔