I actually left my longterm bf/fiance, because of being so angry with multiple things. We have now been apart for 9months, we have seen each other occasionally, but we have both remained single and have been friends, if you can call it that.

I gave him close to 7yr of my life, almost all of my twenties. I feel incredibly angry, resentful, hurt, disrespected and not given what i wanted. I felt like I wasn't appreciated and that I always ALWAYS had to keep my mouth shut about things that infuriated me. As of recently, my ex has been calling and texting and a lot more, telling me he misses me, loves me, and would like to start a family with me. A few (there were MANY more this is just a few) things that bothered me while we were together were this:
--he paid child support faithfully, but also when his ex would cry poor or ask for additional money for a supposed medical bill, he would give her cash not even asking to see a receipt or what he was actually paying for.
---his mother would act extremely friendly, accommodating and pleasant to his ex, however a lot of the time whenever his mother would step foot into our house she wouldn't even greet me and would walk into the kitchen and arrange things like she owned the place. his mother even had the audacity to invite his ex into my home once when she was at the front door to pick up the kid, luckily his ex had enough common sense to not step foot into my home. i was home, literally feet away, and so was my fiance. i was appalled at his mothers actions, I felt disrespected. we are NOT one big happy family, nor will we ever be. Upon getting a house with my ex fiance, my number 1 rule was, his ex would never be welcome inside my home under any circumstance, if that agreement were to be broken, than I would leave him. His mother must of been out of her damn mind.

--I got so sick of standing by and celebrating all the stupid firsts and kid crap with a kid that wasn't mine. All I could ever think about was when I get to start MY OWN family. His kid was spoiled to hell, taken to disney land yearly, if not multiple times a year, even when it wasn't in our budget to do so. Against me telling him not to.

I guess what i'm looking for on here is....how in the world does someone get past all of the emotional turmoil and financial hell, from dating someone who has a kid with someone else?
When i think about the future, all I can think about are expenses for a kid that isn't mine. I don't work for free. I don't think I should have to pay for or even contribute to a household for something/anything, that I don't want around or to even exist. These are some the expenses that I think about:
-additional money that the whore ex might ask him for.
-what if the kid needs braces or the ex wants them for the kid.
-christmas christmas christmas. UGH.
-birthdays.
-random gifts.
-vacations, because I don't want to go on any vacation with his kid, so he'd probably take separate vacations with his kid at some point.
-a car once the kid is of age
-college
-what if the kid gets married(wedding)/has a kid of their own, and it probably will happen young just like the kids mom (his ex).
-what if we were to own property/assets together, what would happen in wills that are made up, I do not want his kid or his ex entitled to anything. if i had children, i would want it going to them.

I also don't ever want to share my house full time with his kid either. I'm just so turned off by the idea that he had a kid with someone else and that I kept my mouth shut like a good little live in wannabe wifey for so long. Now I'm gone, but he is wanting me back, but it's extremely hard for me to fathom going back. All of the above mentioned run through my head. As harsh as it sounds, I do not care one bit about his kid, in any way shape or form. Once upon a time, I was madly in love with him, and I simply tolerated the fact that he had a lot of baggage, and I tried to make the best of the situation. My fairy tale fell very short though, so I ended things. Anyway, just wanted your thoughts/opinion. Should I go back to him?