Inappropriate behavior

O.

My husband and I have known each other 8 years and some change but have been a real couple for 5 years and a half now. We got married last Spring and things have been more on the bright side than the dark or so I thought...

For administrative reasons, I am half of the time abroad so we try to be strong and make it despite the distance.

A few months ago, while he was sleeping  (2am ish) his phone kept ringing so I thought it was an emergency! Oh my surprise when I found out it was a girl on some sexual sh*t! The hurt and betrayal I felt! My heart shattered so of course i woke him up and we had a HUGE argument. After lots of screams and tears, I decided to forgive him as he swore on everything that it was only a virtual affair (still not ok because I WOULD never dare doing anything so disrespectful and hurtful)

I am overseas again this time and for the past 10 days, my dear husband has been a complete d*ckhead!!! Everything turns into a fight, he is moody, mean, cold. Things escalated to the point where he doesn't even speak to me at all and I'm not the type to beg for attention so i didn't contact him either...

This morning as I wake up and catch up on the latest posts on social media, wasn't I surprised and disgusted to see my sweet husband' last Snap!!!

So let me explain something: he claims to HATE pictures, he swears he doesn't like to go out, he pretends that I know all his friends so WHY IS HE IN A CLUB, CUDDLED UP WITH A B*TCH I DON'T KNOW, TAKING AND POSTING PICS WITH?! In the whole 9 years of us knowing each other, we don't even have a picture like that!!!! Don't they look cosy?! I like going out but he never takes me. I like cute little pics but he gets mad the rare occasions I ask for one. I can count on the fingers of one hand the number of times he posted me on his pages...

So is it safe to assume that he is having an affair and has pretty much given up on his marriage?! His only comment on the entire situation? "Don't screenshot my pics"  REALLY?! THAT IS ALL YOU HAVE TO SAY?! NO EXPLANATION? NO EXCUSE?  WHO IS SHE ANYWAY?!!!!

I feel like this is the ultimate form of disrespect ever! What to do?! I am so angry and hurt, I honestly can't think straight

Quick update: I have had absolutely no news from him so yes, our marriage and friendship are over. I cannot tolerate the disrespect, I think it is even worse than the adultery itself. It hurts and won't be easy but I believe that the first thing I'll do once back in the U.S. is serving him the divorce papers and going our separate ways. What a shame... he is in the wrong yet I'm the one feeling all the shame...

Thank you everyone for the precious feedback and advice. It is greatly appreciated