^ yes, he needs to learn a tough lesson so next time he'll know that cheating comes with big consequences.
But how can you at 44 yrs old get pregnant with a man that you knew was cheating in a country that is very religious??
Even if you tell his family, it's HIS family and you are just a mere stranger. They will most likely think you are a old whore who manipulated their son with sex and got knocked up on purpose and its probably not his baby. It's his word against yours. With the gf, I would just write her on FB with respect just saying that you wanted to let her know her bf has been cheating and proof so that the bf can't make up some clever lie.