Is it possible for an outgoing guy to get really quiet around the girl he really likes?

[animal rush]

A guy can be really shy towards a girl he likes because if he finds her extremely beautiful.
He'll have trouble making eye contact with you and trouble talking to you.
The second to last woman I was attracted to, would pick up on whenever I would check her out and smile at me at times.
I ended up approaching her one night with a note that said that she was the most beautiful red haired woman that I've ever seen and maybe I'll talk to her some other time.
The next week I saw her, I overheard her talk about me to 2 of her friends.
One of them told her that I'm a stalker and laughed while I ended up hearing one of them say, "Just ignore him."
I felt bad after I overheard that conversation she had about me.
Well, she did 2 messed up things after I heard that conversation about me-she walked past me to strike up a conversation with a guy and when I went up to her to apologize for the note, she told me,"It was a little strange but don't worry about it" and walked away from me.
She didn't care that I found her so pretty that I was so shy to just have a normal conversation with her.
She works part-time at the gym I'm a member at.
I was first attracted to her when she was just a member and she used to be overweight when I first laid eyes on her.
I didn't even care that she used to be overweight or that she's almost 3 inches taller than me.
She's the only woman I've ever given a note to as I never did that when I was a teenager to a girl (yeah I get how giving a note is childish).
I've had 2 girlfriends and have been led on and rejected by women.
I don't have the whole approaching women down to a science.
There might still be times when I'll be really nervous when I find a woman really beautiful.
When I feel nervous around a particular woman, then I know I must be attracted to her.
You just maybe a really beautiful woman who makes guys nervous.
Hopefully, you don't think it's weird when a guy gets quiet when it comes to you.
Not all guys who are quiet when it comes to girls, are crazy.
I hope that I've helped answer your question and take care of yourself. I mean it. ~ Alan