I (38M) feel like I just fell in love with my wife (33F) after being together for 5 years.

In reality, I'm not sure I ever actually was NOT in love with her and I've always cared about her very deeply. When we got together I didn't feel the manic chaotic passion at the beginning of our relationship (and I dont think she did either). Our relationship started out under very difficult circumstances (drama from both of our exes, both low key alcoholism), but we pulled through together because we knew we loved each other deep inside. There was a lot of uncertainty for the first couple of years, traumatic events that happened to both of us with our family, and we both suffer from pretty bad anxiety.
We were both very fortunate to have each other and pull through. We both got really good jobs, a great apartment, got married. We were just both so damn busy with jobs and working on the new place that we couldn't catch a break. She started to get really irritated that I was not emotionally present during the limited quiet time we had together.
Then COVID happened and I got laid off and she started working from home. While it sounds really bleak, it actually wasn't the worst thing ever. We started being able to have lots of "nothing" time, ran simple errands together, I worked on a few house projects and we adopted a dog together. We also had some really intense and painful discussions/arguments about some issues at the root of the relationship but I feel like we worked through them in a way that we wouldn't have been able to if we weren't basically stuck together.
So, after all of this "boring" time together and COVID shutdown we've had to get creative about the fun stuff we do. We are almost always in sweats, she reads books curled up next to me while I'm playing video games. It seems like we are snuggling more than having sex all the time, but that feels fine to me? I'm suddenly starting to feel this carefree sense of affection that I never felt because there was a constant stress in our relationship/marriage in one form or another during what was supposed to be the "honeymoon period". Just to give a really small example, out of nowhere she posted an Instagram photo of us from a few months ago and I felt tingly like a teenager (even though we've been together this long?) ).
Trying to figure out if what I'm feeling is super strange, this far into a relationship? Any insight appreciated.
tldr; been with wife for several years but feeling emotions for her in a way that I haven't before, wondering why its the case


Source.