<human>: Can you summarize the given text in a few sentences?

My wife(30) and I (33) have been married for 10 years.  We have known our marriage counselor for longer than we have been married.  We have been going to see him as a counselor for about 2 years and change.  My wife goes to him for personal counseling also, regularly.  We had an appointment with him on Friday, and my wife asked if I wanted to not go since they were just going over the budget(she pays the bills).  I wanted to go, and she seemed a little disappointed.  

On saturday night, they and a group of other people were going out.  I couldn't go because I had to work.  I was home well before she was, and started netflix on the laptop(wife's main computer).
And saw an email from our marriage counselor about the event they were going to.  It was sent on Thursday night, and in the middle of the email was "if you come on your own tomorrow, we can wrestle then too.". The next morning was when she asked if I wanted to not go.  He signed off that email exchange with "good night princess"

All other email had been deleted, except sent items where I found the princess comment.

She jealously guards her phone and deletes every message that comes in almost immediately.  I picked it up after she got home from school and saw a text from him saying he was giving her a fbh.  She asked what that meant and he responded "full body hug".  She responded "oooooh, yay!" He responded with "my 2 is here, ill text later" they sign every text I've seen hh. 
 The next day I was fiddling with her phone and she went from happy to agitated instantly.  

Please tell me that there is an innocent explanation, that I'm being paranoid.  I plan on asking her about it tomorrow, but I'm a bundle of nerves right now.
<bot>: Our marriage counselor of 2 years, who has been a friend for longer, and my wife are sending what I'm really hoping aren't sexual texts, please tell me I'm paranoid!