It's just not normal to remain friends with an ex. Especially if it's been a long relationship. You just can't look at each other as friends. And future relationships of yours will be unnecessarily burdened by the factor you're still in contact with your ex (there'll always be suspicion in your new girlfriend, it's human nature).
The easy, clean way out is to cut all ties and just forget about her. Or remember just the good things fondly and appreciate it as an experience that helped build you the way you are today (that's the case with me regarding my ex).
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If you like Blitzball, try Captain Tsubasa II (in English) for NES!
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