feeling so guilty

i met this guy at work the other day and we just clicked. it was like we had a real connection and all that stuff but i'm still technically single or whatever. he's older than me, in his thirties, and really charming. we started talking more and more and before i knew it, one night after closing, we went back to my place together. the thing is, he knows i recently got divorced or separated or something, but i haven't fully told anyone what happened yet. it just feels so wrong somehow, like i'm being unfair to everyone involved. now every time i see him at work i feel this weird mix of guilt and excitement. i shouldn't be having feelings for someone when everything is still up in the air with my ex.