Mark toldEntertainment Tonight after Big Brother's live Season 19 finale that "it's hard to say" how far his romance with Elena will progress, but he's definitely "crazy about her."
"I wanted a showmance [but] I didn't expect to have this strong of feelings, these strong of feelings for her," he gushed. "It'll be interesting to see what happens when we step out in the real world. I mean, I'm excited! I'm planning on going down to Dallas for a little bit."
Mark is a 26-year-old personal trainer from Grand Island, NY, who pursued Elena, a 26-year-old radio personality from Dallas, TX, the whole time both individuals were on Big Brother.
Elena pushed back at times -- and even once told Mark she was done with him -- mainly in fear they'd be viewed as a power couple and she would get roped into an outsiders alliance because of Mark's friendship with the house's common enemy, Cody Nickson.
"I never met anybody like her," Mark confessed of Elena. "She [played] hard to get in the beginning, I mean, she still is, as America has seen. But the biggest thing was that even when she wanted to keep her distance from me, every day she was there for me."
Elena also wanted some space from Mark sometimes because she didn't want a showmance to ruin her Big Brother game and ultimately deprive her of that $500,000 grand prize. Elena argued that she went on the show to play -- not mess around with a guy.
"We had some back and forth in the house," Elena told ET in a separate interview. "It was more so back and forth with me, and a lot of just forth with him."
Elena explained of the pair's dynamic, "I tried very hard to keep my emotional health in mind while trying to start a potential romantic relationship with him, and it was challenging to do so in that environment."
However, once both houseguests were voted out of the game, sparks apparently flew.
"The jury house was a nice break. There's no camera, no pressure," Elena revealed.
"So, I would say we passed phase one, and phase two -- he's going to come hang out in Dallas for a while after this all wraps up, and we'll see what happens with phase three of the relationship, if we can make it in the real world."
"I know he doesn't plan to live in Buffalo, long term -- it's a good sign. But I can't help but remain very rational and logical in all of this, like, I met a guy in the Big Brother house and he's going to move to Texas?! Are you kidding me? Are we all on drugs? That's nuts!"
Mark added he's "very excited to see where things go after this experience," but, "I don't want to rush it" with Elena.