I'm so worried. My girl everyday says something about how cool is "the 60-year-old alpha next door" of her office/job.

I know, I'm a fucking beta. I also know that this is "sidebar shit". But I'm so fucked up and trying to do my best, but I can't stop thinking about her cheating on me with him.

I've been reading TRP theory for years intermitently and I think I get the point. But, in this case, I can't find the correct way.

- Some readings about mate guarding says: Don't give a fuck, you're an alpha. Abundance mentality. Don't even talk about him or he situation. If she does, go distant and focus on your shit until she stops.

- Another readings about mate guarding says: If she talks about him, ridiculize her for her feelings. (I don't know how, btw)

- Another: If she talsk about him, set boundaries. Speak up, tell her what you want and what you do not want.

I don't know what to do.

I don't know how, I managed to keep my concern for myself; I haven't tell her it bothers me. My mind is driving me crazy about that. I can't even work hamstering about it.

But I don't know what to do. I'm so fucking scared of she cheating on me and using me as a provider. We're just beginning (5 months), without kids.

Please, any guidance? Thanks