I dreamed that a stranger was my boyfriend?

Last night I had a dream that a random stranger was my boyfriend. Here's what happened: I walked into a balcony (dont know where) and apparently there was a parade going on in the streets. I sat down and my cousin was sitting next to me. I was saying something (forgot what it was) and then I grabbed my "boyfriends" hand and wrapped it around mine. Then all of a sudden we're in a room and my cousin says she jealous. She grabs me and drags me into my room and locks me in. Then I manage to get out and my boyfriend is on the bed scared. My cousin leaves and pulls my hair. Then my boyfriend and I are walking towards a museum and he says that my cousin only managed to kiss him. So I say that I wont be his first kiss but he says that to him, I'll always be his first kiss. I look at him and he leans in and kisses me. Then he wraps his arm around me and we walk into the museum. Then my dream ends.

I have no idea who this guy is and why I dreamed about this. Does anyone have any thoughts about this, im so confused but he was kind of cute ;)

Anyways, sorry for the long story!