Hi Auggeren & welcome.
We seem to get a lot of these stories on here, so you are certainly not alone.
The stories are very similar: a young man finds a girl who seems perfect for him, but who has been hurt in the past. This time, though, the girl acknowledges that the boy is treating her better than any boy has ever treated her before. All seems to be going well ~ and then the girl simply backs off and becomes distant.
We have had similar stories from girls, too, where the boy has suddenly become cool, for no apparent reason.
I can only assume that some of these people actually want relationships that are dramatic and, while they realise, in their heads, who would be a good partner for them, their hearts are telling them to go for problems and drama. This may even be a subconscious thing.
The other alternative is that they simply don't feel that the relationship is right for them ~ perhaps they just don't feel the strong bonds of affection, attraction, or love, or whatever is required, for a couple relationship to work.
Then they may they find it hard to explain that the relationship is not really for them and they may hope that the other party will simply realise and drift away ~ or remain interested, but not involved. (That way, there is a back-up 'partner' who may be boosting their ego.)
The thing is, when someone is in a relationship, they usually want it to be with someone who genuinely wants to be with them and genuinely cares. However, it may be that you and she have very different ideas about what you want from a relationship.
There may be a perfectly good reason why this woman is behaving this way, or she may simply feel that this relationship is not for her. Maybe the best thing would be to talk this through together, and find out what is behind her behaviour.
If you discover that she feels that the relationship is over, or she is not seeking the same sort of relationship that you want, then it probably wouldn't be good for you to pursue it ~ you might be better off making new friends ~ who may even include the girl who is really meant for you.
You may wish to give her the chance to explain everything, first, but you may not want to hang on to something that isn't really there.
Good luck
