I've finally decided that enough is enough. Found this quote pretty relevant to what I had been through a few weeks back:

"At some point you will realize that you have done too much for someone, the only next possible step to do is to stop. Leave them alone. Walk away. It's not like you're giving up, and it's not like you shouldn't even try. It's just that you have to draw a line of determination from desperation. What is truly yours will eventually be yours, and what is not, no matter how hard you try, will never be."

To you, I've already done what I've could and from the way you responded, I don't really know what I should do next. I guess the only thing to do is to actually stop doing anything. Sorry that I couldn't keep the promise I've made to you, and I'm not sure if you would even see this. I really do wish you well and always remember what I always told you, "Be happy".