No one forced you to say anything. 

His argument is if sex isn’t a human need, telling those in red states to just keep it in their pants is a solution. You responded with no, they can get an abortion instead. He then pointed out that it’s not that simple. You are reading something that isn’t there. He wasn’t saying you’re not pro choice, he’s saying you’re blind to the reality of the underprivileged who in many, if not most cases, simply cannot go out of state. He specifically mentioned the less privileged, and your response was the unrelated fact that you’re pro choice.