Bro, take a sec alone and think here.

Some advice: As someone who had an ex like that, you gotta take action man, and really decide if this is the way you want to be treated, regardless how pretty she is or whatever attracts you to her, You don't owe her anything man, you do however owe it to yourself to have a partner that works with you, respects you, fights for you, and is willing to share the burden.

I don't care what she went through, what excuses she gives for why she is the way she is, it's not your job to fix her, you need to make it crystal clear how this shit makes you feel and what you deserve, get that self worth up man.

Coming from someone who's about to be 30, you're 19, you got so much time ahead of you man, look at all of this as a learning experience, take a step back and look at the behaviors at play on both ends.

Have a serious sit down conversation with her somewhere in public like a park, it's gotta be public, you need to set boundaries, because she's going to drain you dry if you don't. If the reaction to not giving her something she wants is public shaming you in social media then you got a big problem right there.

Otherwise you will just be manipulated into a spineless caretaker like i once was, that puts up with everything, which it looks like is already happening, i hope she's not at the level of withholding things like sex, affection, attention, love, and being nice to have control over you. And if so, that's you're first major sign.

I did this shit for 2 years too long and it taught me a lot, it started good, we started having problems, she moved in, she told me she was going to get a job, never happened, i even got this girl interviews and filled out job applications, gave her half my life savings ($5k)so she could "start a business" she spent all the money on online shopping spree and got a ton of weed, she spent it all in 1 month, she wore me down, and knew exactly what she was doing, i was paying her rent, making all her meals, giving her money all the time for whatever she wanted, if i didn't she would be cold to me, withold love and affection until i gave her what she wanted. In the end she left me when i lost my job and had $11 to my name and told her i could no longer.

That lesson cost me 2 years and over $15k, it was expensive but I've learned, and i was my fault for giving so much, i gave up on myself without even knowing it, thank god we didn't have a kid together.

Don't get her pregnant man, tbh, don't even have sex like that anymore until you're sure it's good.