the problem for me in the jarrod/keira dynamic is that most of their problems seem to be a combination of jarrod trying to prove he's not a stage five clinger (a label hard to get rid of in a world where caring not much is celebrated) and keira thinking about things from a reality tv show point of view.
so, jarrod goes off and dates these women (ali, simone) on the show when it is clear that he has no chemistry with them, and they aren't that keen on him either. all to try to prove to (keira? the other boys? australia? random forum members?) whoever that he is not a one woman guy.
but the thing is that jarrod will always be a one woman guy. sure the women may change, but i don't see him as someone who will date multiple woman, even on a tv show such as this one. to me, jarrod comes across as having a kind of focused intensity when it comes to dating. that's just his personality. sure, there may be times when it is advisable to tone it down, but that doesn't mean he should change his personality.
as for keira, i'm not sure finding love, or the start of a romance on a reality tv show is the best thing for her (probably not the best thing for a lot of people tbh) because i feel that she is overthinking everything because she is in front of the cameras. and she knows where they are lol. the perfectly (or imperfectly) timed cry in the camera confessional, and of course the whole on/off thing with jarrod.
keira knows that drama creates storylines which leads to camera time. and keira loves her some camera time. so she'll break apart from jarrod, and then get jealous when he makes eyes at another woman, and then she'll cuddle up to him and they'll be back together. and then they'll drift apart, keira will make eyes at another man hoping to get jarrod jealous (easy money) and then they'll come together again.
i think keira and jarrod could work if it was off camera. but not on camera.