My girlfriend is cheating, but I kind of like it?

Hi, I'm 24 (male) and my is girlfriend (21) and we both live in the UK. I really really love her and she is wonderful and extremely attractive and charismatic but I'm 95% sure she is cheating on me. She's spending a huge amount of time with this guy from her gym. They started working out together a lot (which is very physically intimate) and now she is going out socializing with him. She dolls herself up to go out with him basically like she's going on a date. She has lost a lot of sexual interest in me and when she has seen him she comes back with that 'Ive just been f**ked kind of aura. She's still very kind and loving with me and otherwise our relationship is still perfect. I haven't had the courage to ask her yet.
But the strange thing is, I'm not even that angry. In fact, and I know this will sound weird, but the thought of her being with him is such a turn on. The last few times she went out with him I spent most of the time at home masturbating. I almost don't want it to stop.
I know this sounds weird but what should I do? Should I just break up with her? But I feel she may be the one and I'll never have such a beautiful girl again? What should I say to her? Help?

Presumably you want to watch?

Mate you need to have a talk with her I feel it’s just gonna mess with you more as it goes on and questioning things, do you need that? If your don’t bring it to her attention I doubt nothing will change. Maybe this is the best time to be a single for you, your still young and this could be a way to try out new fantasies and find people to try them out with you if your realising this kinda turns you on.

Well it’s not a conventional attitude and it doesn’t seem to bode well for future commitment.. You could ask her what’s going and then make a decision. On just live for the moment

What kind of f****** fetish is this? Please, please, just cut her off.

Mate, she is ridiculously beautiful. And I love the idea of her having fun like that. It may be weird but it's not crazy.

I don't really want to admit it, but... Yeh? I know that's super creepy and messed up.

Do you fancy the gym guy as well?

Mate, you are ******* done and dusted. Stop watching p*rn, its not good for your brain

No. I'm straight, I think.

Good, Goddddd my friend😂😭😭😭😭
I’m, dead
I will say this, though
It doesn’t matter how, beautiful, she is. Because you are being, wait what’s that word, “cuckold”.
It’s not even the fetish that is really the issue here it’s more so the fact that she’s doing this and you are just allowing it, she be walkin all over you.
It makes you look like you’re some joke man.
Take your power back, and leave her. There are a tonne of girls out there blood, and she is not one of them for you she’s practically not your girlfriend anymore you can do better, man

Straight but with kinks! 😆

I've read a little about cuckolding. Do you really think it applies here? The cuckold tends to be really submissive and weak, which I'm not sure I am.

If you are not sure, then you are. I'm pretty sure @ageshallnot and @tellizard would agree I'm afraid