By coincidence, One Tree Hill is also the name of another song from the U2 back catalogue.
But whether Lafferty is about to carve Eve’s name in his tree remains to be seen.
It seems he had hitherto been successful at keeping the dalliance under wraps, for reasons best known to himself.
The couple were seen together at a gig in New York in November.
But just two months ago, Lafferty seemed to be at pains to keep the affair secret, tweeting: ‘I am not dating any one particular person at the moment… It sounds like a cliche but I still haven’t met the “one”, I guess.’ Yet sources close to the 6ft2in former high school basketball player insist the pair have been an item ‘for a while’.‘That’s old news,’ said the mother of Rachael Wilson, one of Lafferty’s former girlfriends, whom he dated for more than 18 months.