Your GF got pregnant with her Ex; you need to step up

Judy, your GF, had a one-night-stand with her ex-BF while you were gone in a business trip. She is now pregnant with the ex-BF's baby, and believes you need to take responsibility and raise the child together with her, for the innocent child's sake. Judy doesn't want to get back with her ex-BF, given he is a irresponsible biker: you, however, would be a reliable father for her unborn child