Robert Pattinson unsure about marrying Suki Waterhouse amid 4-year romance

Robert Pattinson is hesitant to pop the question to his beau Suki Waterhouse while she hopelessly awaits.

As per sources, Waterhouse is trying to ease the Twilight alum into the prospect of marriage, however, all efforts are going in vain as the latter stays on the fence.

"She's not making any ultimatums — not yet anyway — but she is bringing up the subject of marriage and feeling him out," the source spilled to RadarOnline.

The pair – who first linked in 2018 – seems like the perfect match to Robert’s friends after his messy split from Kristen Stewart.

"They seem so right for each other, but he's still on the fence," the insider shared, adding: "Rob knows Suki is a great girl and he's lucky to have her, but something is stopping him from taking the plunge."

However, there seems to be an end to the 30-year-old actress’ patience, as the source wondered: "Suki is willing to wait — but for how long, that's the question."