You have to find out what really made this guy to cheat you after professing his love to you. You might discover that you have a hand in it, who knows.
It is not advisable to look for another friend without finding out what actually went wrong in the first relationship. Human heart is too precious to be hurt, so if you don't want to find out, don't give your whole heart next time, else, you'll have them grounded.
Be sure you did play your part well before nailing the guy. Sorry for the pains, time will heal.
