Am I overreacting to this situation?

H

So I was talking to my three year old and teaching her her first name and last name together, as well as my first name and my husbands first name. She did perfect with her name and my name, but then when I told her her dads name is Timothy, she said “oh yeah, Tiffany”, clear as day. So I repeated his name for her, and she repeated Tiffany. After a couple more times of this, I just told her that his name is Timmy, which she said perfectly, and we left it at that.

The thing is though, is that Tiffany is the name of my husbands ex girlfriend. The one he was still talking to literally a couple weeks before he and I first started talking/met each other. And then in the first couple weeks of our relationship, I saw texts coming in from her to his phone of Tiffany telling Timmy to leave her alone and stop texting her all the time. To which I obviously asked Timmy about and we agreed together that he would stop talking to her. But in the back of my head, I’ve always wondered if he is still in love with her. We have been married almost four years now, together for five. I still see Tiffany in town quite a bit, and I’m pretty sure she knows who I am too, even though we’ve never met officially.

Now, here’s the part that has me wondering if I’m overreacting. I decided to tell my husband about this incident of our daughter repeating his exes name, and his response was this: *nervous chuckle kind of laugh* and then, “damn, it’s like that some kind of weird ass sign or something.” and when I asked him what he meant by that, he said “ugh nothing, I don’t know. I’m going to bed now.” And that was the end of the conversation and he went to bed. I’m not pushing it with him right now, because I’m trying to figure out how I feel about this. But I need some help to know if what he said really was weird, and that it’s weird my daughter said her name so clearly and repeatedly. What do y’all think? Am I overreacting or is this something deeper?

Also some key info: when my husband and I are together in town and we see her randomly, his whole demeanor changes. He walks taller, talks louder, and “casually” glances in her direction. We saw her at a stop light next to us one day, and he was literally freaking out about it and just acting different all of a sudden, like he was trying to look “cool” or something. I’ve always just shrugged off this behavior because I know it’s weird to see exes in public, but this conversation was different and I don’t feel like I can shrug off what he said.