Girlfriend Turned On By Me Wearing Panties

My girlfriend knows of my panty fetish and she really gets turned on when she knows I am wearing panties. I like calling her at work and describing the panties I am wearing today. When we both get home from work we practically tear each others clothing off except for our panties and have panty sex. She even buys me panties and says its a turn on shopping for panties for me and surprising me with new ones.