I'll try to forget you! 翻译成我将会努力忘记你，manage to do sth.是试法成功做某事，侧重于已经成功的完成某事了，而且跟 try one's best to do sth.一样都是比较测重于积极的方面，例如努力学习，努力超越某人的意思，所以顾名思义~~
I'll try my best to forget you!
