Soon to be husband constantly talks about his ex fiance

Ok, so my fiance and I have been together for 2 years. We have already said our vows to eachother on a romantic picnic lunch a few months ago. At the time we weren't sure when we would be able to afford to get married for real so we refer to eachother as husband and wife(no one is paying for any part of our wedding, we have to come up with the money ourselves but the selfish families want a wedding and don't want us to elope) . We wear rings and act like we are married. We are planning our perfect wedding together and agree on pretty much everything, where we don't we make fabulous compromises.

Well ever since we started dating he refers to his ex as his ex fiance. Back then it didn't bother me, I didnt really know how long they had been apart but I wasn't really attached to him or thinking we were going anywhere. We fell madly in love. Although we have had our problems and broke up for a week at the beginning of the relationship, we have just been amazing together.

As time has gone on he continues to talk about her. A lot. I make comments every now and then and eventually got a good picture of how long ago this brake up happened. When we met 2 years ago, it had been 7 years. Yes you read that right SEVEN fricking years. Now how long were they together you might ask. On and off for 3 years. They spent months apart then months together. All of his "back in the good days" stories include her.

We have been TTC for 10 months and we have been really great at talking about what ifs around baby stuff. Today we are going apple picking with my daughter  (whoms father I was with and engaged to for some time but never talk about). We were talking about orchards and accidently brought up one her family owns. He said we can't go their my ex fiance's family owns that. WTF!!!

Yes of course I have talked to him about it. How often he mentions her and refers to her as his ex fiance. Great part is, we have been engaged longer  (4 months) than they were. They were engaged for like a month before they broke up. Every time I bring this up that it bugs me and why don't you refer to her as her name or just your ex. I don't talk about ANY of my ex's. Lord knows there were tons of them from a few weeks of dating to years of being with someone. I don't talk about ANY of them, unless it has to do with my daughter then I have to talk about her dad but even that is slim.

Am I over reacting to this or would you be upset too?