I know I am probably going to miss some details here and there but this is my version of the situation and how it played out. I am still trying to wrap my mind around why she is so uspet and what can I do about it.

My wife happened to go through my phone yesterday. Which is fine we use each others phone for things all the time, but she scrolled all the way to the bottom of my messages and found messages to one of my ex girlfriends from when she and I were in college. She locked herself in our bathroom with my phone, and then came out and said she needed to leave. I told her that whatever she saw was before I ever knew her, and I didnt understand why she is taking it to heart that I was with someone before her. She tells me shes not upset that I loved someone else, but because of the way I wrote/spoke to her. According to her, because I just to send long lines of my thoughts, poems, and music I made for her; that this somehow means that I love my ex more. I tried to explain that I used to write, and do music because I had the time back then, and that she really inspired me to be a writer. It is different now because I work six days a week, and it isnt like I dont take the extra step to be romantic with date nights. She still argues that the poems and thoughts I shared were much deeper than the ones I have shared with her, and that it sounded I really loved this ex more. At this point I blew up a little, and said that just because all of her ex relationships were terrible doesnt mean I had the same. She left and weve only been texting since then. Ive apologised, and even conceded that I will write more for her. The only issue being that Im not that much of a writer anymore, I cant right these long strains of rigorous thought and meanings in hopes of wooing someone like that. Its just a matter of time and stress for me. Sure I may have been that person when I was younger and with a different person, but I feel our relationship dynamic is completely different and so is the person that I am now for better or worse.

Is there something I am missing? What do I do about this? Ive tried communicating that Im not how I was before, but it feels like her mind is made up.