How to move on faster? I didn't know it'll hurt me so much!?

Well, that's how we all learn. We express ourselves blindly or be sincere until all is meaningless. Since you've had this experience once don't make the same move again. If you wish to move on with peace, then stay away from this guy. Ignore or block him on the internet. Calm down. Go to the mall, spa, or beach & forget all that troubles you. Do this repeatedly until it helps. Wash your current thoughts away & set your mind in hopes of knowledge.