Should i have an abortion?

At the end of the day regardless of what he has or has not done this is ultimately both of your choices. Whilst I do not condone what he has done you need to think long and hard as the adults that you are to make sure that you do not do something that you may regret later in life. OK so he may not be a great role model for a father yet is this something that your unborn baby should be punished for so think carefully about the choice which you make. Do not get me wrong I am not anti abortion etc but had you not discovered his infidelity would you be keeping the baby? Its your call but remember its a decision not to be taken lightly and something you need to make irrelevant of what your partner has done.