QUOTE(lcyeap90 @ Nov 22 2014, 01:46 AM)
So I have chosen the path to try to save the relationship. We still have some casual texts and meet up. I tried not to initiate to find her in a new day but she did it. Few days ago she invited me for a lunch which I felt surprise as she will date me out. It was just a short lunch session, but we still act like a couple.
The next day morning after the lunch, I gave her a sudden call in the morning when the time she was driving to work. I knew she has a habit to have phone chat during the driving time. Apparently my phone shown I am in the call waiting. After a few calls, she picked up my call and told me she didn't realised the call as she put the phone in vibration mode which in fact she lied. I confront her with the call waiting stuff and we get into kinda bad mood which always happen when we discuss our issue. After few minutes of chat, she hung up my call and she continue to have another call again(my phone shown me). I do not assume who is the one she on call during our conversation thou. We had a few text afterwards and she gave me the reason "I don't want you to feel sad, that's why I did so'.
I started don't know what I am doing all these while. Is it still worthwhile for me to save the relationship? The way she lied to me was so natural and I may really believe it if my phone didn't show me the call waiting notification.

you're a good man that to think saving a r/s first, rather than bailing out unnecessarily.
'bout the call waiting, is it her habit to lie/hide things from you?
on your part, it is natural for the guy to go crazy/protective of the girl, especially when she's not picking up phone, left you wondering/overthinking, etc etc. sometimes, she's just busy or was on something else. chill bro!
it's diffiicult, but try not to overthink stuffs. if you think she's an honest girl, do a face-to-face talk about it. you both need to communicate more on deeper level, setting the expectation, putting up the right effort at the right time.
try to take a step back, look at it objectively.