i have thought in great detail about coriolanus and sejanus, and whether or not coriolanus ever really liked sejanus. i think that the novel/movie are purposefully constructed to make this ambiguous, but i prefer to veer on the side of "yes, he did."
coriolanus' way of loving people was...lacking, to say the least. even with tigris, he thought awful, mean things about her, but it was evident he cared very much for her. the problem with coriolanus was not that he couldn't love -- it was that he could not love without first being assured that his investment would yield positive results for him. at least, he could not readily admit to himself that he was loving until he knew it was going to work out for him.
his character is very succinctly summed up by sejanus, when he tells him, "I remember that from school, watching you watch other people. Pretending you weren't. And choosing the moments you weighed in so carefully" (397). without fully knowing the totality of it, sejanus got it all too right: coriolanus took people in, measured them out, decided what they meant to him, and weighed in when he thought it'd benefit him. coriolanus was calculated in all things, most of all in love—a thing he knew made you vulnerable.