No my fiancé and I get so tired of each other sometimes. We love each other dearly and have a ton of shared hobbies, never fight, but being around any one person that much is draining. Just tell her you need alone time and reassure her it’s not anything she did. You could also encourage her to make other plans so she’s not lonely/bored
Not messed up at all, but its so important that you communicate about it. People need time alone to recharge, but if you start doing it without any communication about your needs it might make her worried about you pulling away in your relationship. My fiance and I have lived together for 2 years and had the same problem. Now we have structured evenings where we’re at home doing our own things in the same space (like I read while he games) AND time doing things completely separate