The source noted, "He sees it as his final shot at getting Louis's attention, and he's said he will drop the bombshell it if he feels it's the only option he's got left, even though it would come as a massive shock."
The insider added, "He knows it could cause another big rift within the family but is starting to feel he has nothing left to lose."
So...wow. If this is true, c'mon - that's a total scumbag move, right? Ah, the smell of blackmail.
Louis' absentee dad recently told the Mirror: "I'd like to be involved in my grandchild's life... I've missed out on Louis' life and I'd like to make up for that. I'd hate to think of him having the sort of relationship with his child that we have had."
Mark Tomlinson (Louis' former step-dad), weighed in on the matter on Twitter:
Blackmail????????? Stupid man. Got a good mind to pay you a visit!!!!— mark tomlinson (@tavtommo) July 27, 2015