Though Jess tried to bury this information, as it is region locked and behind a bunch of paywalls, it is now known that she had a romantic entanglement with Liam Payne for a few weeks. This happened directly after he broke up with his (at the time) pregnant girlfriend. Much like how she got with Jamie directly after a breakup, it seems that this is her favoured tactic for landing a man. Since she doesn't seem to be able to do it any other way.