In my experience, the kindest and most honest thing to do is to tell a lady it is over as soon as possible. This minimizes the heartache. The longer you drag it out, the more hurt will be caused.
My reasoning is as follows: the longer she is in a relationship with you, the more she is likely to fall moe deeply in love, and the greater the hurt when you end it. The sooner you end it, the less deep the love, and the less hurt. A situation where there is NO hurt is normally unavoidable; the key is too minimize her hurt.
Many here, none of whom I was in a relationship with...the one exception being an abusive poster here who merely played with my heart...., have accused me of being a bastard for the above view. I guess they want to make her deeply fall in love, and then dump her. IMHO, that makes them either sick or niave.
No woman that I was in a relationship with thinks I am a bastard...again, the one exception being the abusive poster here who merely played with my heart....most women that I have had a relationship with are still good friends. I take this as an indication that my approach is a good one.