If you're truly commited to being back together for the long haul, I would only consider the first anniversary. Even if you did break up for a while.
IMO, it's ALL a journey (good, bad and in between), which begins when you first realize you want to be together as a couple. For us, it was our first date. Anyway, that's how we celebrate. We don't even celebrate our wedding anniversary.
I personally don't like it when people ask, "how long have you been married?". I always dream of answering, "who cares!". Although the asker doesn't mean any harm. I feel that the question discounts everything that we'd experienced prior to that pont.
We had great times and lot's of love for each other, before and after we got married. To me, getting married was only a formality. It absolutely didn't change our relationship in any way. I wouldn't trade the time that we spent together prior to marriage for anything.
