Just don't understand

I guess I'm just having a bad day. I feel like I've invested so much love, time, energy, and caring into people who don't give those things back in return. And I'm just so sad about this. It's like I always thought, if you are good to others they will be good to you. But that's just not how things work out I guess. I just don't know if I am somehow asking for this type of treatment, am I unknowingly projecting that I don't need these things?

It's not even just my ex, although that is definitely a huge person that I feel this way about. I don't think I'll every be able understand why he cares so little now about my daughter or me, but yet still leans on me to support him emotionally. I've been working on severing that tie. It's just been hard. It's hard to turn off that instinct to take care of people when they need support. Not that I don't want to support anyone, but I think that it is a two way street, and it's probably not healthy for me to continue to take care for anyone who can not give the same back to me.

Why is it so hard to say this? I feel like I'm being crappy to him. It's like I know in my head that it's not unreasonable to expect support and compassion back when you give it, but when I take a stand on it and he looks so sad and defeated, I feel bad about it! I don't want to hurt anyone, but what about me and my hurt?!

I'm going to try and shrug off this sadness for today and spend some time with my daughter, and also get some more stuff packed away and what not. I just needed to get some of these negative feelings out. I know I probably shouldn't let these things bother me, but my brain doesn't always give my heart the memo I guess.