You will need to add the commas as follows:
I think Robert, Mary Jane, Andrea, Lee Ann, and Milton should be on the planning committee.
There are 4 commas.
I would paraphrase it being that it is one of the given options.
Romeo and Juliet is a story about forbidden love. I do believe in love at first sight, because it happened to me. Yes, because I wouldn't want to live without my true love.