Matthew 19 is rather interesting to me. Because in this day of 'internet porn addiction', that falls under the category of 'sexual immorality'.... thereby constituting a 'yes' that you could divorce him. If he is not having sex with you because of something HE is doing on the outside whether with an actual person or not, then it's up for debate. Yes, the bible CLEARLY states when it acceptable for divorce. But the Bible CLEARLY states what those ground might be..... Also later down in Matthew is this.
Matthew 5:27-28
“You have heard that it was said, ‘You shall not commit adultery.’[SUP][
a][/SUP] [SUP]28 [/SUP]But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart."
Only you know the reasons why he is not having sex with you. You are also to, basically, give your body up to your husband. If you have been holding out for any reason, be it headache, kids, work,......CONTROL... then, while he might have certain reasons for looking elsewhere if he's not having sex with you, often times, there is also a reason.
People who post these things in forums only give one side of the problem.... So while the BIBLE may be clear on things, human being are not often as clear in THEIR truths....
Best of luck... God Bless