This is going to sound harsh, but give her the time she needs. If you really love her you'll respect her. How old are you guys? Now the harsh, she may want to keep you on the backburner incase it doesn't work with this other jerkoff. It's just an observation, cause some women can be vicious, no lie. Try to get out and do other things with your friends, you have to keep busy. Laying around thinking about it 24-7 is mental suicide. DOnt be at her beckon and call, everytime you do that, she'll know you'll always be there, falling back some might let her see what she's really missing.
everything happens for a reason...beginning to wonder why.