It is possible.

My fiancé cheated on me, and although it was extremely hard, I have forgiven him.
@beemommyof3, is right when she says you'll never forget...

but if you really love each other, then you can overcome it.

My SO realized the mistake he made, and he has been faithful to this day. It still sneaks up on me from time to time, and my heart aches. But I know he loves me and would never do it again.

Here we are 6 years later and still going strong and there is no question of trust.

Sometimes it takes something drastic to make 2 people realize how much they really mean to each other. If you put in the time and effort, it can be done.

Yes it is just takes a lot of work and time

Men are jerks

No! Even if you forgive, you never forget and it will always be in the back of your mind. You wont trust the same again.

It's possibls but not easy and it'll always be in the back of your mind.