Complex sentence: Jeb is much the way Cain used to be when he meets his father later in the series, if somewhat more idealistic; however, being around his father helps Jeb mature and the father-son bond between them is quite strong.
Split into simpler sentences: Jeb is much the way Cain used to be when he meets his father later in the series, if somewhat more idealistic. However being around his father helps Jeb mature and the father-son bond between them is quite strong.