Always about sex

My girlfriend said she wants to get married! But it's always about sex .

Apprently I'm not affectionate and I don't start sex .. she always complains about it , and it's doing my head in.

Cause I do it my way not the way she wants me to.

When u have been with someone for 4.5 years and it's been a toxic relationship and she used to get angry when u were tired and not wanna have it ..

You kind of start feeling like your an object. But I'll be like I'll get up and make us a coffee and out of no where she will say " like my vagina" out of no where it's so annoyed. Or she will be working and she will text me saying I wanna have sex right now .. it's so weird what do yo think? It makes me so angry.