My anxious attachment

I’ve always wanted love in my life, it’s been my only reason to live and now that I’m in a relationship this has amplified, I now notice every shift in my girlfriend’s tone and assume it’s a sign that she wants to leave, at all times I remain scared that I’ll lose what I have because I’ve worked so hard for it, I’m graduating this year and my girlfriend isn’t, she had mentioned to me that she felt “weird” about me going to college and her sister said that once I went to college I’d cheat on her (something I’d never imagine to do) but after that I’d had my heart set on doing college online especially because college has never been big on my plans but love has and I wanted to do anything to reassure her but once she found out I wanted to do online classes she started to feel like I was holding her back because I am so obsessed with only her but not my future as said in her words, I’m making her feel really bad about this because I constantly rely on her for my happiness and I’ve met her halfway in the college thing bcs I rly do have a monstrous need to see her but this has pressured her sm and she although she acts tough is a really fragile person and she hates to be a bother, she has a really good heart and she has the pressure of her family to go to the military and pressure from me bcs I can’t stay minute without her, she wanted to break up with me today, because she thought it’s what’s best for me, bcs she’s so *** self-righteous and she makes up her mind firmly about things it took me a long time for her to finally give us another try, because she is suffering so much from everything and she loves me so much, it pained her to do this, I’m her first love, she’s mine, I truly believe we could stay together till she comes back from the army, my grandparents were highschool sweethearts and my grandpa went to war, they’ve been together for 50 years, I want her to dream bigger for herself, she is giving up on her future and on herself and I want to be bettter for her, I want to be a calming safe place for her instead of causing her sm anxiety, I want us to have a good quiet life and I want her to believe in herself and that her life can be good