My friend is acting weird around me, why?

[Koishiteru]

My friend constantly just stares at me with a smiling face when there isn't anything funny, when talking to me she would smile a little also. I have caught her glancing at me quite often but I also look at her, she would touch me on the arm, shoulders, ass, waist, face, back like everywhere. This only happened AFTER she knew I was lesbian..................so I was thinking she might want to experiment with me but is shy to say it? She would come to me and going out of her group of friends to see me and claims I am her BEST FRIENDS when she hasn't said this BEFORE knowing I was lesbian. She would also hold my hand. Somewhere in my heart I feel she treats me differently to her other friends but I don't want to believe she likes me because she can't possibly like me. Also she would comment on my status on facebook once in a while when she doesn't go on face book AT ALL. It's rare if you get to see her on once in a month.....also she said she would use it more often after I added her on facebook........really coincidental