@NaturalBornWoman
So now you're snarky because some people have said you need to back off and he's not treating his gf that well. You are clearly not happy to cede any ground, and you sound competitive and somewhat smug that he's lying to her to facilitate your friendship. That's the problem, not that he has a friend.
Completely agree with this. The OP sound smug, snarky, and sneery, and appears to be taking great satisfaction in the fact that she is causing trouble in the relationship with her male 'friend' and his new girlfriend.
@operationsunshine
Why not just admit you fancy him and you are threatened by, and jealous of his new girlfriend? Even if you ARE married, it is clear you think of this friend of yours as more than just a friend.
I wonder what your husband thinks of this friendship between you and this male friend....... 
I also wonder (like a few other posters,) why your male friend's girlfriend is being left out all the time. You are just like many other women, who have a close male friend.......... they are NEVER friends with his partner/wife, and they don't WANT to be.
I wonder why........... ??? 