Here are the best things that can happen with a room share:
-new friend
-shared the savings on the single supplement
-great gossip about everyone else

Here are the worst things that can happen with a room share:
-one of you loses the key
-both of you like to keep the hotel amenities
-both of you forgot the safe combination

Seriously, everyone saves money, and traveling with our group of women means from breakfast through dinner, we are together. A room share does not mean you are tied by the hip. Just be pleasant, courteous and work out how you will spend what you saved.