I'm not ruling this out just yet, but I'm gonna say it's highly unlikely that JPJ is cast on Tayshia's season. Will he make an appearance? Maybe, but I don't think they'll get back together.
He has, however, responded to the news that she's the new show lead (and it's also why I think he's not going to make an appearance at all).
JPJ told PEOPLE, "I'm very excited for her ... I think this seems like a great time in her life to really settle down and choose the one."
Ugh, I just wish it had worked out between them. The pair were together until October 2019, when they decided that ultimately going their separate ways was best for both of them.
Read more here.