Girl Problems lol help?

Ok here it goes i like this girl she clames to really really like me alot but i havnt tlk to her for like a good 3 weeks now cuz she stopped texin me and then i felt the need not to write back when she texs me i know its confusing but i dunno me n this girl have a lot of history i like her alot but i try not to but i dunno lol i just wanna know what should i do..