Should I text him or leave him alone?

We've been broken up for over a year it was his choice, but he wanted to continue to be friends and I didn't but he kept contacting me throughout this whole time. But he often comes and goes in my life, and can go weeks without talking to me.

he didn't contact the entire month of May, then I get a text asking if it was me and he tried to call, so I responded, but he didn't respond for 2 days then he asked to call me and we talked for 4 hours and texted each other. He told he loves me and I mistakenly said it back, but now I haven't heard from him in 4 days and I have a feeling I won't be for a while.

Should i I text him or just leave him alone like I always do?
Should I text him or leave him alone?
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