LTR went back to her provider ex fiancé after break up. She still fucks me on the side. Should I keep plating or get rid?

So I had an (Asian-Korean) LTR of 2 years which eventually disbanded because she didn’t feel “stable” with me and I wasn’t “gentle” enough. I’m 26 and she’s 29. Before me, she had a fiancé of 7 years (he’s 36 also Korean) who she cheated on many times before she left him to be with me. Fast forward 2 years, she has now broken up with me (October 2019) and has gone back to him.

Since getting back with him, he bought her a MacBook Pro and took her on a 6 star resort vacation during the Christmas period. The night before the morning she got on the plane with him, she was fucking me in a hotel room calling me daddy and came 3 times literally with tears of passion. Her flight was at 12:00 midday— she stayed with me until 7am in the hotel room, made me deep kiss her for 5 minutes before she walked out the door, went home, called him, packed her shit and met him at the airport.

During pillow talk in the hotel she was telling me shit, such as he’s her partner and I’m her lover. Also told me other shit like when she hugs him she thinks of me and she can’t think of him like a guy because his body is not like mine. She said they only have sex once a week, maybe even once every fortnight. Then she said when she sees westerners in Korea it always reminds her of me and she checks to see if they have a similar height or hair color. Also told me she checks my social media and WhatsApp everyday.

Didn’t hear from her for the whole week after she left for vacation with him, but saw her on WhatsApp around 6/7 times a day which means she was checking me while she was with him. (She’s Korean so only uses WhatsApp to talk to me)

When she got back to Korea I called her and we ended up having phone sex. She came 3 times again and called me daddy and all the good stuff. After the sex I tried being rational with her and started asking her questions like: why are you back with him when you clearly don’t love him? She said “I do love him”. Bullshit. She left him for 2 years ffs and is cheating on him now again. I think she’s confused about what love even means. Perhaps she means she loves him like a family member, but she has 0 firey passionate attraction towards him.

She told me he’s the only one who can make her stable, whatever the fuck that means. Yea I guess that’s because he’s 36 and beta? He lets her do whatever she wants, enables her, pays for her shit even after she left him for 2 years.. and she claims that she loves him, respects him and he’s the only one who knows how to work her.. except he doesn’t, because she’s fucking me while he keeps her “stable”.

She even told me she talks about me to him. Apparently she told him that I have sex tapes of her, and he laughed and said ah yes he probably masturbates watching the videos. Bro if my girlfriend told me her ex has sex tapes I’d be out the door. She told me that she talks highly of me to him as well, about my hobbies etc. Basically I taught her how to do handstand push-ups and she said she told her fiancé about it and now he’s trying to do them and she’s advising him saying “yea ***** said you have to push on your fingertips like this when you’re leaning over”.

Now here’s the fucked up part. I have a bit of oneitis for her and actually really miss her being my girlfriend. I’ve fucked over 10 girls since me and her broke up and nothing hits the spot like it does with her. My feelings for this girl are stopping me from nexting her completely out of my life. Also because I know she “loves” me or is super attracted to me, but for some dumb reason she can’t put 2+2 together in her mind and is settling with him. It’s a real problem, makes me hooker on her. I’ve always loved Asians and she is literally my dream girl physically. Her personality is a shit show, but when it comes to sex.. there is nothing like it.

I have no doubt that in her mind I’m the alpha and he’s the beta, yet she’s gone back to him. Why? She would be jealous and crazy a lot with me when we were together, always super attracted to me and passionate.. but she’s gone back to him.

The day after the phone sex (yesterday) she gave me the cold shoulder as well. Almost like she was taking her guilt out on me. I made it clear to her.. told her she didn’t love her fiancé because she’s on video call spreading her pussy for me and she said “DON’T BLAME ME” and “DON’T JUDGE ME”. It was weird as fuck man. A bit like a kid. Maybe she has BPD? One night she’s giving me her whole body and mind, next night saying things like “don’t call me babe. I’m not your babe. I want to hang up”

Should I stop contacting her? I love the sex too much that’s the problem. I can get other girls but it’s not doing anything for me.

Any advice appreciated.