My husband is cheating, what should I do??

My husband and I have been in a relationship for 10years and 5 years officially married and yesterday I found out that this man has been having an affair with another woman for 5 years, this woman sent me everything..the videos screenshots of their conversations telling her how she’s sweet and their relationship is not going to end etc. He works from upcountry and when he is coming back for his leave he leaves his work place like a day or two before the date he told me, he goes and sleeps with the other woman in hotels and sometimes at her place and then comes home that’s why i never suspected him since he never leaves the house when he is back, this woman even visits him up country more often, she showed me some videos where they they were in a certain hotel upcountry the same hotel he took me in when I visited him upcountry, I’m so frustrated I didn’t eat anything the whole of yesterday upto now and I haven’t told this man about it yet, he is coming back on Wednesday but I don’t even know where to start from🥹 Please advise me, I wouldn’t want to leave this man for sure but all this is driving me crazy.