Ex boyfriend

Hi ladies so I broke up with my now ex about 3 months ago and I miss him so much, I have since it ended. It wasn’t a horrible breakup, it was over something stupid. We dated for a year and I want him back, in the past when I have tried to reach out even in a friendly way he seemed very uninterested in the conversation. I know he is single and I really want to get back in touch with him without seeming desperate. Any help?