<human>: Can you summarize the given text in a few sentences?

Long story short, while I still physically enjoy sex with my GF, I'm no longer emotionally into it anymore. This has to do with my own issue, which she knows nothing about. Separating the emotional aspect of sex with her is how I've dealt with this issue.

The rest of the relationship is good, & I ensure she's taken care of & satisfied in every way possible. From her viewpoint, everything's great. I haven't told her about this, & honestly don't intend to. I can live with this, as it just doesn't seem important to me lacking the emotional aspect anymore, compared to the rest of the relationship. But I be lying if I said I don't miss it, & there isn't a feasible way to get it back.

If your SO was doing this, or similar, would you want to know, or would it really matter? I believe what she doesn't know isn't going to hurt her (not sure if it would or not, & I don't want to risk hurting her).
<bot>: No longer emotionally bonding during sex with GF.  She has no idea.  Rest of the relationship is good.  Does she need to know?