Honestly? I don't think so. Cap definitely needs to forgive Tony, and that's gonna take time.... I think people aren't giving him, or his friendship with Tony, enough credit

Cap and Tony have known each other for more than fifteen years and they've gone through A LOT of shit together. A LOT. No matter HOW angry you are at someone, you don't throw away fifteen years of constant companionship. You just don't. It's not going to be easy, and it probably won't be the same, but I have no doubt that they'll find each other again.