Natalia, I know your intentions are good but you are over thinking this, we're not reading anything into your not replying other than she's not interested, next. I'm not a woman so I cannot speak for women, maybe for you ladies some sort of message relaying why we are not a good fit is important, afterall most women are not used to being turned down... but from a guys perspective it's not needed as that is life as usual. We have been trying to get with girls since we were around 14-15 years old , for most of us that gives us at least 10+ years of figuring out that no matter how great a guy you are, no matter what you have to offer, you are just not going to be right guy for every girl. You could be 6'2, 5% bodyfat with muscle and abs, have billions in the bank and a great set of jet black hair but you're going to meet the girl who thinks you're too muscly and likes blondes. Brad Pitt in his prime would have been turned down by some crazy woman, that's the reality of what it is to be a man. We don't need to hear the exact specifics of why, in fact it sometimes helps just to think she's probably one of those crazy women with unreal expectactions that's why she passed haha. If a guy doesn't get the message and messages you over and over then by all means tell him to make him go away but for most of us, if we haven't heard back immediately we've already moved on and forgotten you.