Okay...so I'll summarize this whole thing as best as I can...
A girl..let's call her Catherine..Fell in love with me..Problem is- she has a boyfriend..whom she lives with.. She wanted me to be in a 3 way relationship with her and her boyfriend, and I declined- because I know 3 way things never work, and it would never go anywhere...
Recently another girl has gotten a humoungous crush on me- and Catherine found out about it..I'm begening to like the second girl...Catherine found out and now she is very hurt by this..She said that she can't imagine me with someone else because it will hurt too much. But at the same time I don't want to live my life alone... What should I do to make Catherine understand me? How do I confort her through this?

Damn big problem!, Well this girl 'Catherine' has already a boyfriend right?!, so, she has boyfriend and you have another girl to love... Why is she insistat of being with you?!??!!

See that's the thing- I have no idea!
I guess she likes me alot and she may just be bored with her boyfriend...idk..

Good concution... maybe you're right

well it is possible to like more than one person and its true she could be getting board of her bf and maybe things just arent the same as they were with her boy friend and she doesnt want to break up with him cause shes scared that things wont work out with you so shes needs soemone to be there for her....but idk

It looks like she's confused... she has a boyfriend and likes you...

well i would probably just let her have some time and figure things out maybe then she wont feel so hurt

Thanks guys..I apreciate all of the advice

hmm okay yeah i agree with the others she's confused but you should consider how you feel about her. If you like give it time see if she breaks it off or chill some more with your new lady friend see how things go. Remeber you have feeling too and Catherine is your friend talk through it with her take it slow. Good call on the 3-way, they don't work out trust me!

try and talk to her!let her know that since she's currently with her boyfrend,you can't be with her.go out with the other grrl,but only after you explain things to Catherine,so that she understands and isn't completely crushed.best of luck!