My husband has never cheated on me in 33 years. He was tempted once, by an ex-best friend of mine, who I had done everything for. A Christian friend helped him resist the temptation and he has never looked at another woman. I know, because he spends a lot of time on-line, and it is usually cars/trucks/houses/sailboats he is viewing, and we are not usually apart.
I have never cheated on my husband in 33 years. I love him dearly, even through the years he did not treat me right. I committed my life to Christ, and Christ does not like adultery or divorce, so I tried to always forgive him and love him. And God has changed him radically in the past few years. It is like we are newly weds!
Praying for the hurt the OP is showing in her post. Adultery is a violation of the marriage vows, and of your safety and love.