TRUST IN A RELATIONSHIP!!!

I BEEN WITH MY CHILDS FATHER FOR 5 YEARS ON AND OFF AND AS OFF NOW WE ARE EXPECTING OR SECOND CHILD TOGETHER.... MOVING FORWARD TO NOW , THE ISSUE IS THAT I FOUND OUT HE WAS MESSAGING SOME GIRL ON FB AND SHE CAME TO SEE HIM. THE CRAZY AND SAD ABOUT THE SITUATION IS THAT , THE GIRL WORKS AT MY JOB AND SIT 15 FEET AWAY FROM ME , NOW LET ME REWIND THE SITUATION I DIDN'T KNOW THEY WHERE MESSING AROUND UNTIL 2 WEEKS AFTER SHE WENT TO SEE HIM BECAUSE SHE SEEN HIM DROPPING ME TO WORK ... SO WHEN I CAME INTO ARE WORK BUILDING SHE APPROACHES ME AND TELL ME SHE TALKING TO HIM AND SENT ME MESSAGES BETWEEN THE 2 OFF THEM , AND THE SAME DAY SHE WENT TO GO SEE HIM WAS THE DAY I FOUND OUT THE SEX OFF OUR BABY WITCH HE DIDN'T GO BECAUSE HE WAS MAD AT ME ABOUT SOME BULLSHIT ...IT HURTS AND ITS FUCKED UP BECAUSE HE DIDN'T GO TO THE DOCTOR WITH ME BUT YET WAS BEGGING SOME HOE TO COME SEE HIM AND NOW THAT HE GOT CAUGHT HE SUPPOSEDLY WANNA FEEL BAD AND TELLING ME HE IS WILLING TO DO ANYTHING POSSIBLE TO FIX OUR RELATIONSHIP...SO I TOLD HIM IN RESPONSE THAT I WANT ALL LOGINS TO SOCIAL MEDIA SO I CAN KNOW FOR SURE THAT HE IS NOT DOING ANYTHING BEHIND MY BACK..BUT INSTEAD OFF HIM GIVING TO ME HE DELETED EVERYTHING AND THATS KINDA A PROBLEM BECAUSE I FEEL LIKE HE CAN LOGIN AT ANY GIVING TIME TALK TO WHOEVER AND I WOULDN'T KNOW FOR SURE AND I TOLD HIM IF ITS NOT GOING TO GIVE IT ME THEN WERE NOT GOING TO BE TOGETHER CAUSE I CANT FULLY TRUST HIM.. NOW HE IS CALLING ME CRAZY AND TELLING ME IM FORCING HIM TO HAVE SOCIAL MEDIA WHEN NOW ALL OFF SUDDEN WONT WANT IT BECAUSE REALLY THAT GOT HIM CAUGHT UP