Need your advice ;(

I’m currently 7months pregnant, last week my SO went out to a hookah lounge without telling me. I check his location and it said he was there while he made me believe he was still working. When I asked him he denied being there. After I kept asking him he said he met up with one of his guys for an hour. I believed him and let it go. Last week something told me to go through this phone while he was asleep.(I know it’s not write but I had a terrible gut feeling) I went through his phone and saw he had another Instagram besides his original one. I saw him messaging a couple of girls. There was one girl he messaged a few times calling her cute and what not . I noticed he messaged her about going to the hookah lounge on Saturday evening(the same day he was there). I messaged the girl, she confirmed she was there with him for a hour that night and picked her up as well. Mind you we live together and I was waiting for him at home. This girl is a random girl he has never met before or know at all. He is really apologetic and keeps asking for a chance to make everything better. He claims he did it because if his self esteem??? He thinks of me and him

Break up he will be awkward and that no one will like him. He is “insecure” about his looks, but honestly he’s handsome. I feel so hurt because I would never do that to him and he did it while I was pregnant. He also had a lot of porn of girls fingering themselves and screenshots on a girls Instagram that he USED to follow and tried talking to. I’m trying so hard to try again but I feel like my heart can never forgive him. Need advice :( I feel like I’m not good enough or unattractive since I’m pregnant 😔