Patrick Schwarzenegger could soon be on the verge of proposing to "Wrecking Ball" girlfriend Miley Cyrus.

According to HollywoodLife.com, the 21-year-old Schwarzenegger seems convinced Cyrus is the one for him. The website adds Cyrus is almost certain to emphatically answer yes once she hears the magic words.

But they still might be a while in coming. "

He is not ready for marriage or engagement but he does believe that she is the one," a source told HollywoodLife.com. "He wants his mom [Maria Shriver] on board with the relationship, which is slowly coming about."

Cyrus and Shriver have reportedly struggled to come to a meeting of the minds, but the chill may finally be starting to thaw. Still, that might not be Patrick's only reservation. The website reports the young Schwarzenegger is still smarting from his mom's public fallout with his father after it was revealed Arnold Schwarzenegger had a longtime affair with a family worker that gave birth to a child.

"He is also scared that they both come from homes of marriage trouble or divorce and when he eventually gets married, he only wants to do it once so he really wants to make sure that he is in the right place mentally and emotionally," the source said of Patrick's thinking in actually proposing to Cyrus. "He's enjoying her as his girlfriend and doesn't want to ruin a good thing."

Joined by Shriver, the MailOnline reports Schwarzenegger and Cyrus stepped out for a night on the town on Wednesday at the hotspot L.A. eatery Palm Restaurant. Brother Christopher was also on hand for the festivities, for which Miley was sure to dress the part.

Widely known for scantily laced attire, Cyrus reportedly dressed down to the point of carrying a Saint Laurent bucket bag as her primary accessory.