Hi sis, I understand, feeling mo nadaya ka... hindi ka dapat magpapakasal had you known na niloko ka while you were engaged, to think na this is the second time he cheated on you. Probably you feel that you should have not been in this miserable pit, had you known, had you known, had you known. Oh if you can only turn back time... it's possible that there might be a tinge of regret, but don't panic, it's not the end of the world.
Do not be hard on yourself, that's what you feel, and what you feel is normal given what you experienced on deception and betrayal, you have a right to those feelings. It only happened, last year or less than two years? Iba iba ang coping ng mga tao. It will be helpful if you learn to accept where you're currently are. I guess you better process whatever your emotions are by journaling, seeking counseling, praying etc, don't suppress it, don't deny it, but don't blurt it out too to him.
As for your marriage, like what others said, nandyan na yan. I don't know how are you gonna deal with it. But you sound like you are capable of self-direction, given that there are many sound advices here, you'll be able to pick out what will be uself for you.
Additionally, if you want to ensure a joyful marriage, it would be helpful to seek out marriage counseling or attend marriage seminars so you both could learn couple and relationship skills. Make him work with you as a team. A joyful marriage is not something we leave out to chance, but it's something we deliberately work on.
