There are many statements that go with this. Jake's 1 on 1 talking about how magical they were together dancing. How he would love to be the guy that puts the ring on her finger. Look at the first episode the previews. I think it is in the end. Where Jillian is standing in her dress at the FRC. Just before that is Jillian and Jake dancing. She talks about the one who was hard to let go. Not the one who left on his own. When you rewatch the episode where Jake is let go. Watch Jillian afterwards. She not only watches and he walks out of sight she turns her body to watch him leave. Wes, Jesse and Michael are all in the background watching her watch Jake leave.