I'm tired of pushing my girlfriend away every time I feel like she doesn't care. 
I'm tired of perceiving so many little changes in her behavior and misinterpreting as her losing interest in me. 
Everything makes me feel she doesn't love me anymore, and I'm tired of needing so much reassurance. She's tired too, I can notice it. 
I need help. I've read a lot of DBT self-helps and still I can't find anything that deals with those problems. 
What do you guys do? Do you feel the same?