To expand on
@RangerMIke 's point, do not let her use sex as a currency. Just because she gives you amazing sex and let's you do whatever is meaningless for an LTR. For a woman to qualify as LTR material she needs many other qualities that will enrich your life. Good sex can be developed and taught, it's not some rare thing.
You have to be incredibly strong with these women because if you spend too much time fuucking them you'll neglect your own life and become weak willed as a result. You have to be strong enough to decline sex sometimes AND walk if she makes a big deal about it or cheats/lies. You have to be able to risk losing her to maintain your principles, no exceptions. When the sex is good guys make too many exceptions and it undermines their moral foundation. The guilt they feel later from bringing it upon themselves only compounds the issue. Don't let that happen, be solid with your boundaries. It's fine to be generous but always keep yourself in check. If you feel she's not appreciative then pull back and focus on yourself until you can give freely again. If she leaves then clearly she doesn't have the empathy to understand and support your position, nothing lost.
Rationally this woman is not LTR material and unless she goes to counseling and maintains a healthy lifestyle indefinitely she will not change. She may be able to keep up the act for a few months, but when you notice her slipping back into old ways or when your gut tells you she's losing interest, let her go.
And don't be stupid about her letting you cuum inside her. If she gets pregnant and doesn't want to abort and you're not ready for a kid you are fuucked. She'll have the kid and go back to the CC, meanwhile she'll suck your money and time endlessly through the conduit of the child. Is the feeling of a creampie really worth such trouble for the rest of your life? Just bust on her face or something.
You've been seeing her a month and already had heated arguments, what does that tell you?
Have your fun, and even an STR is fine but always keep your eyes peeled for real LTR material. And again, don't let exceptions to your principles keep you from walking or from dismissing her. It takes a strong resolve to dismiss good sex for more intangible things like peace of mind.
LTR material will always stand by your side and not constantly try to start drama. She didn't break up with guys because she enjoys the drama, it's all she has. when the good attention dries up she will look for attention in any form, good or bad. She cried while telling you because she wants to look like the victim despite her doing it all to herself. She knows she has problems and is actively avoiding them, and she's gotten very good at it, which is really dangerous for anyone that gets involved with her.
When a person becomes very good at lying and let's it consume their life they start to deceive themselves, believing their own lies. It can be very convincing.
