Is ' the reason for that' correct? I am not sure if I have to add ' for that' in the following sentence, but I often see the reason for that or the reason for this. What do you think?
He did not want to go to the party. The reason for that ( or the reason?) was he was afriad of bumping into his ex-girlfirend at the party.
He did not want to go to the party. The reason for that ( or the reason?) was he was afriad of bumping into his ex-girlfirend at the party.