do i keep putting myself through hell or try to keep going and forget about it?

ok, so me and a girl were dating for a little over a year, we started out as friends then got closer and eventually were best friends and told eachother everything, then we started dating and everything was great!! All of a sudden she decided she needed space although she keeps telling me she still loves me just as much and wants to be with me but just can't, we don't talk much because we're trying to give eachother space so she can figure out w/e she needs too i love her very much and feel like i've lost everything and don't know what to do