Should i ask her out or wait ?

[Edi]

I have been hanging out with some friends for quite some time now. I met a girl that is hang out with our group and recently i realised that i have started getting feelings for her. We hang out to different parties every week. When we are out with the group we tend to stay close to each other, dancing together and talking. we talked a lot about our lives and past relationships and see seems that we have the same opinion on most of the things. During the week she talks to me on facebook and as a matter of fact she always text me first. My friends are continuously telling me if i am in a relationship with her cause every weekend we are seen with each other and uploading photos of each other on facebook. We have build together a sort of trust and we listen to each other a lot.

Some of my friends in the group already as her out for a date and she declined their offer and now i am a little confused of what should i do. Should i ask her out for a date? should i try to kiss her while we are together? any suggestion ?