Just because it is legal doesn't make it okay.

So I made an Australian friend who is my age (I was 18 at the time).  Shawn seemed like a pretty cool dude.  We got along pretty well and I decided to hang with him at the bar.  As the night wore on and the females came in I noticed him noticing a girl.  She looked older but not too much older for someone our age.  After he got to talking to them I did my best to be a wing man; as he hit on this girl I chatted up her friend.  Later when we were all talking we found out that she was 31.  I was shocked but I did my rest not to let on.  The group conversation continued and I watched his built relationship with her slowly deteriorate.  Then the conversation turned in to a debate wether it was okay for "Someone our age to sleep with someone your age".  It was his last and most desperate attempt to get into this girls pants who he'd been talking to all night.  I would have stopped him and saved him the embarrassment of being not only being shot down but also told off, but I sat back and enjoyed the show.  The conversation reached a climax when Shawn said

"Well, it's not against the law or anything"

And she harshly retorted

"Just because it is legal doesn't mean it's okay!" 

Since then he has left the Brisbane hostel I am staying at and moved on.  And from all of this I learned one very important lesson; I am a bad wingman.