Relationships don't have to be a bed of roses but eventually, do
you see a satisfying r/s with a happy man down the road?
If that possibility is nowhere in sight after 5 years, I think
not.
It's best to evaluate the value of this r/s and try answering
your own questions objectively. Break it down.
What foundation is your r/s built upon?
Mutual support for each other? Partnership? Trust?
Is your sex life still satisfying?
Are you still attracted to him? Does he still rock your world in
bed?
Disagreements are common but if the bickering is wearing you out
and he's constantly making nasty remarks, then it's definitely
going down hill.
He mentioned he will commit a month's paycheck to sexy women on
the streets, I wouldn't worry if I were you because he doesn't
sound like the type with the goods the pull that one off. Being in
a r/s doesn't mean you stop being attracted to others, so the red
flag, imho, is the resentment building up inside of him. He sounds
like he's seething from something.
What about yourself?
Do you want to meet new people or are you be satisfied with just
him on your horizon. Forever?
Since the both of you run in the same family and social circles,
why don't you seek second opinions from family and close friends?
What do they think of him?
We usually put on our best behaviour in the dating stage, so
it's common to expect 50% less after marriage. And even then, most
guys will respect their gfs and wives. I have close friends heading
into their sixth year anniversaries with their girlfriends and I
don't see their r/s disintegrating as badly as yours.
I'd bail if I were you. I'm of the opinion men never dump women,
they just display all the signals, then wait for you to walk
away.