Will try to make this short:
Did a lot of pua stuff, read a lot, still not the greatest ever with women, but coupled with my good looks I can get consistent results. I just figured out that I lost track of my goal and that was getting a girlfriend and not just getting countless different girls. So I got this girlfriend. She was great, she understood me, loved me, was by far the most intelligent person I have met besides myself, etc. Only bad part was that she lived in another country, even though the flight was only an hour away. But she was worth it and I like my privacy anyway. Anyways, I was happy.

But then I found out she had some severe issues. She could get depressed and angry out of nowhere. I've been deaing this with the past six months now. She also got upset at me that I never really gave up the PUA lifestyle. I don't cheat on her, but I still flirted with women for fun and to see if I still got it.

Anyways, after she found that out, I tried to make things better. I stopped flirting, was really nice to her and all. I kinda returned to my nice guy persona, the AFC. And every time she broke up with me in the last six months I got her back. Because I know her, she doesn't really mean it, she just wants to break up because she is sad/angry.

But I'm starting to get tired of this. And also, I'm starting to feel I'm losing my PUA skills. Like that I'm starting to get more boring, not be as entertaining. She has also gotten really sensitive because of her depression...which isn't really a great thing since my humor mostly consists of C&F en sarcasm. I just can't be/aren't the guy I turned into after I learnt all this stuff anymore. And I kinda miss it.

I don't really know what I'm asking here, since I'm sure most of you guys think that I should just break up with her. But I don't want to take such drastic steps yet. Is there another way where I can still be her boyfriend, but also regain the PUA persona I have lost?

Let me give you an analogy. PUA is a sprinter and LTR is a long distance marathoner. A sprinter trains for speed for a specific distance. If he tries to sprint the whole marathon distance, he'll have to sprint, stop, sprint, stop and then sprint. That's just the nature of things. Like a PUA.
A marathoner runner, however, does not sprint but rather run at a steady pace over longer and longer distances.
You can't use jealously to raise girlfriend's interest in a LTR. It's counterproductive, because one ingredient in a LTR is "TRUST" and "Integrity". The Soft next tactics work in the beginning of a committed relationship, but eventually you'll have to switch to good communication and viable actions to raise her interest level much higher, even into space. The skill of a marathon runner.

But you have an issue here. It's a long distance relationship? Eventually, one has to be willing to move closer to demonstrate willingly to up the ante in the relationship committent. Are you willing to do that?