Rory McIlroy Kyle Terada-USA TODAY Sports

Last week, news broke that PGA superstar Rory McIlroy had filed for divorce from his longtime wife Erica Stoll. It came as a shock to many on the outside, but it sounds like it was a longtime coming.

According to a report from Us Weekly, Erica had become unhappy with their marriage over the past several years.

“A point of contention in Rory’s marriage with Erica was that Erica was lonely in their marriage,” a source told Us Weekly. “Rory was a hard person to be married to.”

According to the Us Weekly insider, McIlroy’s constant traveling put a strain on their relationship, particularly after they had a child together.

“She knew what she was getting into with his profession, but once they had Poppy, things really changed and she had a new perspective,” the inside source told Us Weekly. “Erica was usually absent for most of his tournaments and was really focused on Poppy.”

The source told Us that the two “were living very different lives the last two years with him being on the road, and eventually she had a breaking point.”

The two had been married for about seven years before reaching this point.

[Us Weekly]