Badly hurt

23 month relationship ended, started off fun with lots of communication, I was her only boyfriend who had the courage to meet her family and spend time with them, I was very open minded and accepting, we had breakups a couple times (nothing serious), Throughout the relationship I would give her gifts and make lots of effort in working on myself to make her happy, What I asked for in return i never got, She said she will now work on herself and do what i wanted from her in the beginning, but not for me, I truly did everything i could but now I’m left feeling terrible and as if i wasted my time, when we met she was in a really bad place with addiction in which i helped her get out of and truly experience happiness, but now that she is doing better she left me?