I really need help knowing if I am over reacting, I don't think I am but my wife obviously does.
My wife was never secretive with her phone until recently, then for a few weeks it was never out of her reach. She then got a new phone, but her old one remainded linked. From here on multiple things happened that in my opinion get progressively worse.
Firstly she received a call from our daughters male dance teacher (we have 4 kids together). I saw the phone call on her old phone, left it to call out, and initially thought nothing of it, but then she deleted the phone call from her record. When I asked her she flat out denied having or deleting the call (but later admitted it after been challenged on the next things). This happened again a few days later.
On a family birthday party, I took our three youngest kids home so my wife and eldest daughter could stay out and listen/dance to an entertainer at our local restaurant. I again saw a phone call pop up from the same man, and when I called my wife I could see she was on another call. When I finally talked to her she again denied it at first, it also turns out she had left our 11 year old daughter in the restaurant (with another adult) to take the phone call privately.
This is where it gets worse for me. A Snapchat message from the same man came up on her old phone saying "Is it safe to talk? X x x". My wife responded with something i will never see given messages were set to auto delete, and all he responded was "OK x".When i saw that I logged in to her account as I couldn't take it. Until then I didn't use Snapchat, but figured out how to see how often they were talking. He was her "BFF" based on chat frequency meaning she spoke to him more than anyone else, with at least a 3 week streak (daily unbroken messages, thats a Snapchat term, not mine), and over 3k messages sent!
We spoke about this the next day, and eventually got to a reasonable position with each other considering the situation. She claims he is struggling with his marriage and just vents to her, but over 3000 messages, the secretive nature of her messages, lying to my face and deleting phone calls seems too much for just that. I asked her to not message him as much, and if she does not use an auto deleting app. The very same day I caught her messaging him whilst sat in the same room. She again lied and said she was messaging another friend, but then the response message from him popped up on Snapchat as she was saying this.
She insists she is doing nothing wrong, and says she has to message him given he teaches our kids. I've again asked her to block him on Snapchat and only communicate over normal messages but this got her angry at me and she has no intentions of doing it.
I honestly love my wife so much, but I don't think I can accept her messaging him going forward at all, or at most to organise a dance lesson. Even if it is innocent the way it has been hidden and lied about means I will never fully accept that. I worry my wife is just going to continue messaging him regardless, or even start doing it more secretive and just tell me she has stopped.
I really want opinions on two things, but any advice is appreciated. Am I been unreasonable by been upset by this and asking her to stop messaging, and does my wife's explanation seem reasonable given the secrecy?
Thanks for any help