Happened with my two last LTRs, offered sex and they denied me. the first one denied and said she preffered to do it in the morning, I didn't respond, went to brush my teeth and to sleep without giving her any attention. She called her dad to come pick her up from my house and said she won't let me use her for sex and treat her like this. I told her she is exaggerating and to call him off, she did, we went to sleep and had amazing sex in the morning. The second LTR dropped me off at my place, I asked her to come with me and she said she really needs to wake up early but she really doesn't want to disappoint me. This time I just accepted it and went my way. My conclusion was I lost frame before those events and that led to those situations, which were when I realized I'm not in a good position and that the relationship will end soon. I'm new to this so my judgement on situations might be wrong and I'll be happy to get some good advice for next time, or actually, so it will never happen again.