I just flunked college due to my hormones. How do I lower my libido later?!?

Last semester was crazy. I ended up with 3 Fs. I don't know what happened to me, but I could never take my mind off . Every week I asked out a new girl. During midterm weeks when I was SUPPOSED to be studying, I spent nights thinking about how to "snag" certain girls (some of them had boyfriends). I didn't go to cl but instead went on daily lunch dates with girls. I seriously couldn't concentrate AT ALL on my studies. Some of my textbooks were still in its shrinkwrap at the end of the year (no joke). Almost everyday I wondered what it would be like to have NO testetrone or to literally lop off my nuts (sorry for the graphic language). But I really could not control myself. My mind was too distracted. I don't know why I couldn't repress ual feelings. What should I do to repress them later?