Should I text my ex?

I have been dating a friends cousin for about four months however I didn't feel like we had much in common and I could tell that he was getting ready to say "I love you" I broke up with him by telling him that I wasn't ready for a serious relationship and that I need to find my schedule and that he derserved someone who could give him more. It's been about a week in a half and I really want to text him and see how he is and maybe we could be friends. I miss him and don't want him out of my life completely and plus I always hear things about him through his cousin, my friend. 

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