Why 'Bachelor' Ben Higgins Says Colton Underwood Shouldn't Propose to Tayshia or Hannah G. (Exclusive)

'He only wanted Cassie,' Higgins tells ET.

Colton Underwood's options are limited, at least according to Ben Higgins

While speaking with ET's Lauren Zima last week, the former Bachelor said that Colton's behavior after his breakup with Cassie poses a major problem for his relationships with the two remaining women, Tayshia and Hannah G. -- and that he shouldn't consider proposing to either one of them. 

"He only wanted Cassie," Ben said, arguing that Colton's fence jump proves this. "I don't know, at this point, how he looks around himself and goes, 'Yeah, the other two women still have a chance.'" 

"I don't think it would be fair to them, especially after we watched what just happened.. [for Colton to end the show] with an engagement," he added. 

As Ben noted, explosive breakups this close to the finale aren't exactly a new thing for the Bachelor franchise. Fans will remember Desiree Hartsock's shocking split from her frontrunner, Brooks, in her 2013 Bachelorette season, when he left the competition in her final three. She was devastated, but ended up engaged to Chris Siegfried. The pair are now married with two children

"Without that example, it would be really hard for me to look at any of these relationships working. ...[But] in Colton's scenario, it feels a little more isolated," Ben said, noting that Colton told Cassie that he wanted it to be her in the end. "That's the part I don't get, is how you get on one knee, when you're still so much into one person, up until a few days left."

That's not to say Ben thinks Colton should end up with Cassie, however. "It was very clear that she was not into him," he said of the Huntington Beach, California, native, taking issue with the way she decided to break up with Colton on last Monday's episode. 

"I think all she wanted to tell him was, 'You're a great guy, you've proven to be a great guy, but I'm just not that into you. And as a result, I need to leave,'" he shared. "It felt like she was dancing around the subject, going, 'This is too fast. This isn't right for me. I just don't know.' She knew."

"What Colton did, was he just fought for her, and I think that's fair. He loves this woman. I don't think she gave him the right explanation. She should have just left and said, 'This isn't going to work,'" Ben added. "Shut that down."

Colton's two-night Bachelor finale airs on Monday and Tuesday at 8 p.m. ET/PT on ABC. Join ET's Bachelor Nation Facebook group here.