"The heart wants what the heart wants," Chen recently told ET's Brice Sander. However, she also admitted that they might be moving a little fast.
"They did jump in too soon, but that's Big Brother," she explained. "And you know what? We've had more marriages come out of Big Brother than The Bachelor."
However, she complimented the couple for keeping their flirtations and affections mostly to themselves.
"They're not flaunting their showmance in everyone else's face," Chen said. "We've seen that in the past where, you know, [dating houseguests] will walk around, arms hooked over shoulders. It's like a scene out of Grease or something. But they've been keeping it somewhat low-key."
"[And] you can't help who you fall in love with," she added.
As for other showmances brewing between contestants in the house, Chen predicts some sparks between Faysal Shafaat -- who goes by the nickname Fessy -- and Haleigh Broucher. However, she says they might wait to explore their feelings after the competition.