Well, well. My ideal lover. Well-built but not superhuge, nice chest and stomach, tight, muscular butt, in great shape, can last all night, considers it his mission to give me orgasm after powerful orgasm until I can't stand straight. Cock in the 7-8 in. range with good girth and great control, gets steel hard every time and can stay steel hard for long sessions. Confident, even a little cocky. Pays attention to my cues in bed, knows how to be gentle, aggressive and sometimes a little rough, knows how to use his hips. Above all else, makes me cum like there's no tomorrow.
Like some other people said, there'd be some other things in there if we're talking about an ideal relationship, but if we're talking about an ideal sex partner there ya are.