What if I liked him but now he has a girlfriend?

Ok so theres this guy that I like/liked and my friend talked to him for me and she did but it was already the last days of school and I was acting shy then like I dont know what happened because he liked me apparentely and I liked him then over the summer I was on myspace and saw that he had a girlfriend what do I do when I go back to school it will be totally awkward what do I do .

You just act like there was never anything between you two, because there really wasnt. He has a girlfriend, so he is probably more concerned with that anyway.