Um. A lot of people hate Scott for what he did to Madelyne. A lot.
did Jean care about MP?
Yes. When Jean came back she reached out to Scott, hoping to pick things back up, but he kept her at arm's distance while at the same time keeping Madelyne's existence from her. So for a while Jean (who's telepathy was gone around that time) had no idea what was going on. And when she found out about Madelyne and her baby, she told Scott to go back to her. Jean and Scott didn't get back together until the X-Men and Madelyne were apparently killed on live television.