To cut a long story short, my LTR of 8 months has been acting off recently. We haven't seen eachother much in the past month due to various reasons and I last saw her friday night.

She was acting off with me through texts and this continued the other night: She was acting passive aggressive towards me when I offered to partake in future plans; and not treating me like I would expect a loving girlfriend to. When we got home I simply said I'm only prepared to continue fucking and end the relationship if she continues acting this way. Afterwards, she started crying and I reiterated I'm not obliged to put up with her acting this way towards me. I was quite cold about the ultimatum and we haven't spoke much since.

It's frustrating because I have no idea what she wants from me; got any advice?