Do on again off again friendships/relationships ever work out?

Matched with this gal online back in October. We met a few weeks later. We stopped talking for a while after that because she quit replying to me.

I wished her a Merry Christmas and we talked for a few more weeks until she quit replying.

I went to a baseball game Saturday and swore I saw her there so I texted her. It wasn't her but we've been talking everyday since and she's even mentioned doing things together.

Do on again off again relationships ever work out? She has a great job, she's smart, and has her life together, and I think that's what keeps bringing us back to each other.
Do on again off again friendships/relationships ever work out?
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