Why are you guys assuming that the stories are definitely planted for PR? It would not be the first time that the press have written stories based on assumptions they've made about some pap pics that came in over their feed, including made-up 'sources'. It literally happens all the damn time - whenever someone famous is seen with a member of the opposite sex while being single.

Sometimes the people in question are going out, but 90% of the time it turns out to be bullshit.

Neither of them has used their personal relationships for PR purposes in the past, they both say they think it's really unhelpful for an actor to do so, so why would they start now? They're not flogging a reality TV show!