Well that wasn’t gonna happen for one reason and he said it in the movie “everyone I care about gets hurt” so we weren’t gonna see him get too attached bc he knows what happens to people around him
Xavier accidentally wiped them out, in addition to probably everyone else in the mansion, when he first had his psychic seizures. After that the government basically declared his brain a WMD so Logan (the only one strong enough to withstand when Xavier has an attack) took him to Mexico to hide