Good Man waits to have s*x until Marriage, only to discover his new wife is 4 months pregnant

In this generation of social media and the "issues" that comes with it, finding a decent wife is one of the hardest tasks. Sadly, most men don't know this truth until they land in the mess.

Here's the story of another man who got more than he bargained for in marriage:

“We exchanged vows in a colorful wedding a few weeks back, even though I highly suspected that my wife was already pregnant with another man’s baby, but I married her anyway.. My suspicions became true when we recently visited a family doctor for routine check ups.

The doctor said she was four months pregnant. My Christian values ensured that I and my wife did not engage in s*xual activities before tying the knot, therefore cementing my belief that she cheated on me. 

I have since been heartbroken because I feel that I was cheated into marriage. I am seriously contemplating opting out even after sacrificing time during courtship and spending on a costly wedding.

Despite caring for my wife I cannot forgive her because there is no trust in our relationship.”

What do you think; should he forgive and take care of the child, or once a cheat always a cheat?