Is it normal to have an unusual habit?

I live in a big city and sometimes (ok always) I'll walk with guys I see and pretend I am with them. I talk to them in my head and smile and laugh if they are witty.
The other day I saw a lovely one to walk with, I kept up with him and I can get real close because it's so crowded.
When he went into a shop I went too and squished up to him in the throng of people.
I got carried away and whispered in his ear when he was looking at shirts. "Not that one darling it clashes with your eyes" Oh that caused a stir, he reeled around to see who's lips were so close to his ear. I slunk back into the crowd because I am a coward at heart.
There is always tomorrow and the next day and the next.
I am not lonely for male company (ok I am).
Who else does this for fun?