I need advice

Ok so I went through my husbands phone found some pics in his deleted file of his stuff. I also found some text between him and a girl I don't like talking bout how he used to hit on her and not to tell anyone there texting. Then I seen that he's been getting on his old fb and searching and seems to be talking to this other girl. He denies all of it and says he was gonna send those pics to me but didn't so deleted them idk what to do I tried talking and he just gets an attitude and we start fighting. Someone plz help!