Moving on - Chapter 2

Its been 3 months since i have decided to move on in my life. And right now..there is this girl whom i have taken a liking to. She has ignored my sms and whatsapp before...and there were suggestions that i should give up as they feel she is simply not interested in me...That she only sees me as a colleague and not someone whom she is willing to develop a relationship with...Someone has kindly sounded her out and while she is unwilling to comment on how she sees me (me and that person is quite close, so she might have suspected something), there's nothing negative in it at all...In fact, it seems encouraging to go after her again...I do not know if i am lying to myself or not...but there are many times which i myself didnt reply to messages (Eddery will be the best proof to it) and on most occasions..i didnt reply not because i dun like to, but rather i dun see the need to..I kept observing her reactions to me, it seems very conflicting..sometimes she is simply so sweet and cute..but other times she seemed kinda cold and resistant to me..And its obvious that the way she talks to me is different from the others..she's much more sweeter and smiling while talking to me...I admit i might have been too aggressive from the start which might had put her off...that now i am still fearful of sending her messages as i am scared she wouldnt reply and she would ignore me & give me the cold treatment like the previous times...What should i do? And how should i go about doing it?...