If he didn't love me..why did he stay with me so long?

My ex and I were together for a year, he broke up with me 3 months ago because he "didn't need a relationship." We did stay friends after the break up and he told me that he did love me but the feeling changed to something different through the course of our relationship.

I was talking to one of his guy friends last night and he told me that my ex had said he was never that inspired by me (my ex is a writer) He said he wrote a million things about his exes, but not about me. So why did he stay so long? If I was the only one who had strong feelings.

He still acts protective over me, but I would say this is a good indication that it is really really over?
If he didn't love me..why did he stay with me so long?
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