Should I say something back?

[975]

Im friends with this guy I went to school with and I had his number in my ipod cuz we used to text every now and then when we first became friends on fb last year and I havent talked to him or been on my ipod since then. We've never hung out or anything either we just would talk on fb and text. I got married last year and he knows that since were friends on facebook. Anyway I was on my ipod last night and was messing with my facetime and I accidently started to call him. Well a few min later I get an email from him saying who is this so I just say that it was me and I accidently called him and I was sorry. Then he says oh ya I remember you and asks how long its been since we've talked. I say since last year. And then he replies and says it was his gf writing me and that shes now pissed cuz she thinks me and him hooked up back when we talked and he asks me to tell her that I'm married and have been since last year when we last talked. So I say ya Im happily married and have been since last year then the conversation ended. A little while later though I get a message on facebook from his gf all pissed off and saying she doesnt believe we didnt hook up and doesnt believe I accidently facetimed him and is threatening me and threatening to tell my husband who knows I was talking to him and knows we never hung out and that I wouldnt do anything like that anyways. Should I say something back to her?