I know you feel a bit upset but if someone was manipulating you, you did the right thing. The thing is when I stand up for myself, I often blow up completely and will curse as much as what I drink water in a day. Everyone is different though, my personality allows me to just take and take until eventually you are going to push the wrong button and I will lose it on you. That's why I left one of my old jobs as a security guard, dealing with idiots was making me a very angry and hostile person, left the job and returned to my calm demeanor in a few days. Standing up can be hard to do, but it is needed to be done, otherwise people will just push over you in life.