I need someone to care!!!

My life has been about perfect lately. I have a girlfriend (who I love unbelievably much) I’ve been with her for a year and a month now. And its been the best time of my life. We spend every moment of every day together and have sooo many memories together. And I dont want to give her any less than everything. But I started thinking for some reason, and I feel like I’ve done so much for her this year, and she keeps getting more and more ungrateful. And she kinda tells me what to do a lot, like shes my mom. And it gets on my nurves so much. Like she yells at me for cursin and she curses as much as I do. And I show her all the love I can, and she just doesnt seem like shes as interested as she used to be. I’m still completely syked about us being together and I dont know what to do. She doesnt do much for me, she just accepts the love I give her, and sometimes she acts like she doesn’t even want it. I almost called her today to break up with her, then I looked at a picture of us and started cryin my eyes out. I want to end it, but I still want to marry her, I just feel like shes not mature enough for our relationship right now. I dont know what to do, I really dont want to ruin this, but I feel like I have to!!! I looked at so many pics today, I cryed all day, I made myself throw up twice, smoked a pack of cigs. And I just got home, its freezing outside. And I walked a mile barefoot to an over pass, and it scared me because I started climbin the fence to jump off into the highway, but some girl I dont even know pulled me down and hugged me and walked away. So I walked half way home and turned around to walk back to the bridge. Then I changed my mind again and walked home. Barefoot! And now I’m just so upset, I’ve been so happy lately and suddenly I feel so ruined!!! Can anyone at all just please care and talk to me. I need any support/help I can get right now. Pleeease!!!