Is she interested guys?10points.will answeer yours.?

So I was on the bus with my crush(girl) and our mutual friend(girl) and our other mutual friend(guy) and we were going home from school. My friend(girl) was sitting with my crush and I was sitting with my guy friend. Out of nowhere, my friend(the girl) says that she'll get off the bus with my guy friend and that I'll get off with my crush. My crush heard this, and she kinda blushed and looked at me, smiled, and then said,"ur getting off with me, right?"what does this mean? Also, was my friend tryna set us up?