I'm going with what you said in all likelihood he couldn't get over the loss of the Baby and decided to leave

that or he found someone else and just never went back to Bella
What are you waiting for play it
She's a Li, of course, there is bound to be a happy ending but not without some drama first, and this date with Jill might not work out yeah Bella set it up but you can see she feels a bit jealous about it, not really complicated we will eventually have an option of who we eventually want to pursue we could end up leaving Jill after this one date and go to Bella