According to a dictionary 'act out' means to show the events that happened in a situation by doing them again or by doing the same things as the people involved.
I was talking about a wedding and said:
Both the bride and the groom danced together. They also acted out how they met and fell in love and finally ended up marrying each other.
Was my sentence correct? They were showing us how they met by acting. It was like a stage show.