I am an Actor. I have played Dan and Larry previously and I am currently directing this play!
Closer is an amzingly succicnt, accurate and realistic play. It was billy connoly who said "A man needs to have sex before He'll say 'I love you', a women needs to hear 'I love you' before she'll have sex! At somepoint, somewhere, one of them must lie". Closer shows us those lies.
Dan, Larry, Anna and Alice's lives are connected in ways none of them could comprehend. The decisions they make when they are young and juvinile come back to haunt them later as they slowly descend into lives of deciet and lies.
I love this play, and even if you are not going to perform it, read it... it'll make you think about your own relationships and possibly influence you for the better!