It doesn't sound dramatic at all. Going through the hurt and betrayal of being cheated on in bound to change you.I do think he’s tainted it yeah because it’s changed me as a person, it’s changed how I look at people, it changed everything and I know that might sound dramatic but it did x
Just know that what's happened is absolutely not your fault and like another poster said, you are well within your rights to tell your husband that you need more time to figure out what you want to do. If that's what you want of course.
You told him you are willing to give him another chance, but how long after finding out about the affair did you say that?