to add or not to add on facebook. too soon?

i recently broke up with my boyfriend of 2 years (about a week and a half ago), but it was a long time coming and though I'm upset at how things are turning out (he's quickly becoming a jerk), I don't want him back and honestly cannot list any compelling reasons why I loved him. I guess I'm just really over him and the relationship..BUT it does still bother me that he's being a jerk cause I'd like to stay friends since we were so close in the things that we shared about our families and insecurities..he was like a best friend for those 2 years..

but my question is this..I have my eye on someone, and please don't tell me that I'm a terrible person because our relationship has been fairly non-existent for several months in terms of love and passion (I'd say at least 6 months, but probably more..only passion was sex now and again)..so is it too soon to add the guy on facebook? He's a very interesting guy and I want to get to know him better but I dont want it to look like a rebound (I'd CERTAINLY give it a long time before becoming involved with him romantically at all) but I'm also pretty anxious to get to know him..

so..add or wait a while longer?