Do you think I am being desperate here?

I went out with this girl and she told me she had a great time and looked forward to doing it again. BUT I think I scared her away. I guess she just wanted to be friends but I did things that lead her to think that I wanted to be something more than a friend. I wasn't calling her every minute or doing anything drastic but she definitely got the vibe of what I was trying to do. I just sent one or two texts every 2 days or so. And if she didn't respond I didn't send any. I didn't call her. I just simply sent text messages. Her best friend told me not to go too fast with her but to make sure that I start off as friends. I didn't say, "I love you, marry me!" anything like that but she got scared even just with casual text messages. I didn't even say I liked her or anything. Anyways, she told me to leave her alone. That was about a month ago. But I still cannot stop thinking about her and can't even date other girls even though I had them scheduled. Her friend tells me I took the wrong method on her but that I am not completely out yet. She told me she wanted to be left alone so I haven't made any contact for a month but I want to do something now. If I call her is this just a desperation? I do have other dates that I can go on but I can't because of her. I just think she's the right one. What the heck can I do?! Am I clinging? Is this being desperate?