Relationship-realist Carrie Bradshaw once likened soulmates to on-duty cabs, and said if one passes you by, another's sure to pull over eventually. But what if there's only a single car that can see you signaling by the curb, but for some reason, it can't stop, or you can't get manage to get in? Canadian pop rock band Marianas Trench is exploring the unfortunate possibility.

In the lyric video for "One Love," the group's newest single, the foursome address the bleak reality that one true connection may be all that each person's afforded. Through the eyes of a passenger on a picturesque train ride, singer Josh Ramsay can't help but croon through nostalgia in the clip, which listens like a sleeker rendition of Matisyahu's "One Day."

"Now I wake up and I forget that you are gone / A phantom limb is all that I am hanging on / So don't stop, no stopping it yet / What if the one true love's the only one you get?" he sings.

And the question, Ramsay told PopCrush, is still giving him trouble.

"I think most people like to think that there's one person out there for everyone," he said. "Some people call that soulmates. Some people call that true love. No one ever talks about what you do if you're lucky enough to find that person, and you screw it up. What do you do after that? I certainly don't know, but I'm trying to figure it out."

The group's next album, Astoria, will be available on October 23, and they'll kick off a United States tour with Secret Someones in November.

Check out the clip above, and tell us what you think!

Watch Marianas Trench play Pop the Question: