Let me provide an example of a recurring theme I had with my BPD ex:
Sometimes when we were going upstairs to bed and she had consumed some alcoholic beverages, as soon as we got upstairs to get ready for bedtime she'd start dysregulating and start saying "I want to go home" and once or twice during these episodes she even started to become hysterical and start running into doors, stumbling and falling, etc.
It took quite some time to realize what was going on but she was reacting the best way she knew how, to remove herself from an intense situation where she felt we were too close for her comfort, that she wasn't good enough for me and would eventually abandon her. I asked her about these episodes later and she said she felt like I didn't want her there...perhaps it was my facial expression or personality or whatever but she was dead wrong and it never crossed my mind. On one occasion she even instigated ruining the mood that would eventually lead to sex and when I didn't want to hold her in bed the way she wanted, she immediately wanted to leave.
Now in hindsight I realize what was going on: She was a very beautiful but insecure girl, had been molested between 4-7, and harbored very strong feelings for me for quite some time before we dated. Occasionally throughout our 8 month friendship she would sometimes say "I love you" and more often throughout the 1.5 months we were dating she would keep saying "I'm falling for you" and "I love you but don't take it the wrong way." Making love to her was our most intimate bonding experience and one we both enjoyed, however it drew her closer to me than she was comfortable with due to her insecurity and her knowledge that she wasn't good for me.
So here we have two people that do have love for one another but at the same time she felt I deserved better. Instead of getting more attached to me she wanted to withdraw from the situation, however the reaction I believe her subconscious wanted was me to just reaffirm how I felt about her, comfort her, and to just hold her, removing sex from the equation. Not quite the best way get the affirmation she really wanted but a good way of testing if someone TRULY does love you. If you don't truly love someone and are subjected to a behavior like this over and over again, you probably wouldn't be able to validate their feelings without a lot of experience.
This is I believe was a subconscious borderline baiting to alleviate abandonment fears.