For my 21st birthday my girlfriend at the time gifted me a massage with a friend of hers who was studying at a local "massage school". My GF did not know that her friend had a crush on me and yes, I was wildly attracted to her as well. Being a faithful BF I would not fuck the massage girl but agreed to let her give me a "happy ending". The best part was her undressing and revealing a perfect body which got me rock hard right away. I erupted about ten minutes in, finally cumming when she was licking me balls as she stroked.