Cheated

My boyfriend cheated on me with a girl from church...He had unprotected sex with her early Sunday morning and we hung out Monday and had sex...We were on the phone when he said he texted his friend and told them to sneak out and come over...He said he'd be right back because he didn't think they'd actually come over so I though he'll be back in ten fifteen minutes..I stayed up for two hours waiting on him. I was worried and scared something bad happened to him...He was fucking her for those two hours...Someone told me to try and work things out and others say no or idk..please help...