You truly feel however you feel. If that's angry and hurt from him being a jerk, then that's how you feel. Feelings are not facts. They are just feelings. It's what you do with them that makes a difference. In other words, feeling angry and hurt is fine. Lashing out at him in order to alleviate those feelings is not, and will probably create worse feelings in the end.
I recall a Buddhist teaching that I read once that compared feelings to the tide. When you feel an overwhelming emotion, it's like waves washing over you. You can easily be swept out to sea if you are not grounded and steady. Let the feelings wash over you like a wave and keep your feet firmly planted. They will soon retreat, just like the wave and you will be okay. No action is necessary, just resolve.
L