Friends i have fallen out with added me of facebook ?!?

I have fallen out with two friends about seven months ago and i basically hate them. We used to be best friends but they both used to kind of bully me. One of them goes to my school and she doesn't say anything to me or even look at me. They are still best friends and just yesterday they both separately added me on face book. I ignored it but i dont know what there intentions are, what do you think ? Are they just nosey or do they want to speak to me again or are they wanting to start an argument. One of them also started slagging me to my other best friend on Bebo and stuff, so i dont know what to believe. Please help ?! xx