Becoming aware of your husband's infidelity is a painful experience, but it doesn't necessarily mean the end of your relationship. A man can deceive and still love his wife wholeheartedly. Infidelity can happen even in happy marriages, and it's important to understand that it's not your fault. It's absolutely possible that your partner loves you, loved you before, and will continue to love you in the future.
Infidelity doesn't mean that love is gone or that it never existed. The reality is that you can love someone and still cheat on them. In fact, a lot of affairs happen in relationships that would otherwise be very happy. There doesn't have to be some kind of emotional deprivation or sexual dysfunction for someone to cheat on their partner (although certainly these factors can sometimes lead to romantic affairs).
I have worked with many couples where one of the members of the couple cheated, and yet it was clear that, apart from the intense remorse, they still felt a lot of love and care for their spouse.