[alias240]

No, it's a sign of respect. In these days of Tinder, girls are used to guys hitting on them all the time. By not contacting them, you are actually sending a message.

[rtl49]

It's quite possible to communicate romantic interest in a way that wouldn't make the other person uncomfortable or suggest disrespect.

[sehutson]

Speaking as a woman, the message I would get from this is, "I'm not that interested."