My friend built up a long comfort zone with this girl he met at work. He went out an entire week with her. Every day they spent about 8 hours together.
After much comfort building he got to a point where she invited him over to his place for a movie. She definitely wanted to kiss him and move to the seduction zone because she invented an excuse for him to come over to her place.
After the movie and heavy petting and kissing, he started to escalate quite drastically. He kissed her breasts sporadically and she moaned of this. He proceeded with coitus (the actual penetration). When he was already inside her, she said to him "not without a condom" - to which he replied "I'm clean" and he thrusted her three times before pulling back away from her. He tried to lean in and kiss her but she quite purposely moved her head away each time he tried.
After this he sat down on the bed and kept apologizing like he did the worst thing in the world. "I'm sorry, I'm sorry" repeatedly. She said it was ok and that she trusted him on his word of being clean.
The next day (predictably and ironically) she starts being cold and distant to him when he tries to get another date with her. Subsequent attempts were fruitless - they were met with the same, cold rejection - or rather - she started making up excuses (sometimes at the last minute).
My diagnosis is that he is experiencing what is known as Mystery Method's (it's in the book) 'buyer's remorse'. They went into the intercourse phase, they had sex but that went wrong. It may not go wrong or she will have buyer's remorse - which is what she has now. He messed up the sex part - a crucial part; a point of no return as we all know. Not only that, the whole Pair Bonding story comes into play as well, screwing his situation up even more.
He wants to know how to get her 'back', or at least, step away from the rejection/freeze zone and get back into the comfort zone (or should I say 'the saddle') so he can go back to foreplay zone and so on. He really likes her and he claims she is the one (I don't believe in that foolishness) and now all he has been doing is day in day out trying to get her to talk to him or to go out with him for dinner. She keeps rejecting him and tells him he 'violated' and 'abused' her.
So, what can he do if he really wants her back?