Okay. So I got the werewolf thing from the Companion quest line. Then I became vampire lord. I got bored and regained werewolf from the girl. Got bored again and went lord. :P so got bored AGAIN and went to regain werewolf. It won't let me. The choice when you talk to her won't show. I read the wiki about being able to regain it an infinite amount of times... or I read it wrong. Anyone help me?
Ok, here's an answer if you gain Lycanthropy and cured there is no way in the base game to get it back. However if you install The Elder Scrolls V: Dawnguard you can get it back by talking to Aela the Huntress after completing the nessecary steps that go along with it. If you get rid of Lycanthropy again however, you can just talk to Aela about receving Lycanthropy you can keeping doing this an infinite amount of times. I hope this helps.