Can’t get hard

I’ve been dating this guy for three months and we made it official. We tried having sex on 3/27/2020 and he couldn’t get hard. Mind you he always brag about his sex life and send dick pic 2 weeks after we started talking we took a break we had sex on 4/17 and our one month anniversary came up and we tried having sex on 5/10/2020 but he couldn’t get hard. Has that happen to anybody what should I do he keeps playing victim saying he’s sorry and he went to get advice from this girl that he slept with and he’s telling me oh I should be more dominant and I need to boost his ego up. He is trying to keep with this guy I had sex with 2 years ago because I told him that was the best sex I’ve ever had. He’s always talking about oh the girls he’s been with are dominant. They’ll just take the dick and put in themselves and ride. I hate riding. What should I do