YES...it can! I'm speaking from experience.

I was hooked on porn for a few years and it caused a lot of trouble in my marriage. After numerous arguments and threats, I decided to get the software for my work and home PCs. That helped to an extent where I was not looking at porn knowing that if I did, my W would know. But the problem was that I was already addicted and b'cos I couldn't get my fix from porn anymore, I went out and had sex wth a prostitute.

I promised to always be faithful to my wife and never cheat on her, but in actual fact I was cheating when I looked at porn, let alone going to the prostitute. That incident however made me realise that I had a problem and I began making a lot of changes in my life, especially turning to GOD. But it was too little too late. My wife found out about my visiting the prostitute and we are presently seperated. I have been in IC for Sex addiction for the past few months and no longer have any urges to look at porn or to visit prostitutes or anything of the sort, but my wife does not believe that I won't do this again.

She is in Withdrawal and anything that I do to show her that I am a changing man does not make the slightest impression on her. In fact, we are at a point right now where she does not feel that she can be married to me anymore and she says that she is afraid of what could happen if I do this again.

So again, YES it can!!!

I posted you on a different thread.
I think that's a good attitude....you can still cut your losses pretty easily.

I know porn and strip clubs are pretty common but YOU do not have he had no right to sneek and lie behind your back...expect you to accept it becuse ALL guys do it.... and tell you he didn't tell you becuse you couldn't handle it.
THAT is extremely dispresptful of him. Your marriage is based on a lie and I think you would be better off cutting your losses and getting out.
THere are guys out there who will be honest w/ you from the start......that way, you get to choose how you feel about it and IF you want to accept it and live w/ it in your marriage.
The fact that he lies about it is a big red flag about HIM.
He has a problem.
I am afraid you will never be able to trust him again...and beleive me, it is much more difficult to get out of a marriage if there are children involved.