How to confront a BPD when they might be cheating?

[Lucy2015]

Hello,
I'm going to explain my situation and hopefully receive some guidance or suggestions.
My BPD husband and I have been in counseling for 2 months.  :)uring this time and before I've had this gut feeling that something else has been going on.  I recently went through our cell phone records and found a number that has been coming up for the past 5 months.  There have been long phone conversations with this person and text messages back and forth.  I notice the calls/text increase when we have had a fight.  My husband literally takes his phone everywhere with him, which I find odd.  I called the number and it's a female and at some point I was able to search through his contacts and obtain the name of the person whom I believe to be someone he dated in the past.  

Does anyone have thoughts on how to proceed with this?  I'm not ok with him cheating even if it is emotionally.  If it is a friend then why not just say that?  I can say for certain that if this situation was reversed he would blow up if he new I was talking to someone I dated in the past.

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[Naughty Nibbler]

Hi Lucy 2015:  
Therapy is a good place to discuss the phone call situation.  You had a previous thread, where you asked about how you could bring up abusive situations in therapy.  Have you tried any of the suggestions?

You might be able to apply some feedback from your thread below to your current situation.

https://bpdfamily.com/message_board/index.php?topic=307509.msg12854326#msg12854326