met my possible soul mate need help with hiding facebook relationship status?

[Tom]

i was at spring awakening music festival in chicago over the weekend and on sunday, the last night, i met my soul mate. problem is that she lives in illinois and i live in kentucky. i'm currently dating someone else and i only met the illinois girl for a day so i don't want to ruin what i have for something that may be impossible to work out. i do want to add the soul mate on facebook but i don't want her seeing that i am currently in a relationship and lose interest. but i really have to add her so that i don't lose touch with her. long distance stuff is hard

how would i make my relationship status visible to my girlfriend but not to anyone else? i know i can block ppl from seeing it but i'd have to add the girl first and if that happened she'd see i have a gf...

help?