He was. Jamie, however, was married to the Doctor and one of the reasons I don't buy into your Rose Is The Doctor's One True Love theory is that Jamie is and all the evidence got burninated. Although despite that, there's enough stills of them clinging to each other that one could infer it anyway. Plus, eight lives down the line he still remembers Jamie in T&C.

I also don't buy that the Doctor's S3 emo was terribly much about Rose. It felt to me as more of a general Gallifrey Go Boom thing, with his recent loss of Rose just making everything worse.