He cheated 😭

after years of trying to get pregnant it happen, and I had. Miscarriage at 10 weeks, I stayed home rested and went back to work after 3 weeks of bed rest, and dealing with my emotions. After being gone from work when I got back I asked my boss for a raise to become his right hand in the company, he actually gave it to me I was so proud of myself! Well that same day while having lunch with my manager and coworkers, this new girl named gabby came up to me and asked me “ oh hey your Alex’s wife right” me thinking it was an old friend of his I said yes, she blow up in my face saying how for the past few months she has been having an affair with my husband.😭 she don’t care who heard she just yelled it there in front of everyone, I felt so embarrassed 😞, I felt broken, I was left speechless. Me thinking my husband is at work and he isn’t from what I was told, well I went home and got all the courage I got, while I was having a cigarette “ I quit a long time I go just had one to calm me down from beating this man up” I told him I need to talk to you about work, I went to the point and told him what gabby had told me, here am stupid waiting for a “no babe I would never cheat on you” This guy starts showing me some pictures of random girls on Facebook asking me if it was one of them who told me. He showed me more then 20 pictures. I feel so heart broken he never said no I didn’t😭😩 I don’t know what to do or think I need some advice do I leave or stay please help me 😭