During Monday night's episode, Lowe eliminatedAshLee Frazier and determined his Final 2 bachelorettes -- one of which he planned to propose to and eventually start a family with.
But according to The Bachelor star, neither Giudici or Yenter stood out over the other in his mind even though time was running out.
"I had hoped that I would have a clear favorite by that point, but that wasn't the case," Lowe wrote in his People blog.
Lowe apparently had an amazing date with Yenter in Thailand which opened his eyes to the possibility of spending the rest of his life with her.
"I couldn't wait to see Lindsay. It felt like it had been weeks since we spent time together in her hometown. We always had such a fun time together, so I knew she would be the perfect person to explore with in Thailand. Going to the market with Lindsay was such an incredible experience. She was willing to try everything, including fried bugs and chicken feet," Lowe explained.
"After we had our fill of food, we ventured to the beach, which was home to a ton of monkeys. This was one of the coolest experiences of my life and I was so happy to be sharing the moment with someone I cared for so much. As Lindsay and I were kissing in the ocean, I remember thinking about how happy she made me and what a comforting feeling it was. We ended our day with dinner and a performance by traditional Thai dancers. Everything about my time with Lindsay felt right and I knew I was starting to fall in love with her. Hearing her tell me she loved me solidified what I saw in her eyes every time she looked at me."
Catherine, on the other hand, had a bubble personality that made a lasting imprint on Lowe's heart, as The Bachelor star was never ready to say goodbye or even wait to see her again.
"I couldn't get enough of Catherine. I was always so happy around her and I think despite our different lifestyles, we were actually a really good fit together. Her sense of humor, her adventurous nature and her intellect kept me wanting more. Our snorkeling date was fun but my favorite part came later. That storm swept in so quickly, and we rushed back to the boat for cover but the moment seemed too romantic not to share a kiss in the rain. I knew I was falling in love with Catherine. That realization led me to the next one... I had to send AshLee home," Lowe wrote.
And both women also had something in common that was very important to Lowe.
"I've said from the very beginning that I was looking for my best friend. Being with Lindsay and Catherine seemed like they could be that," he noted.
The Bachelor's seventeenth-season finale will air Monday, March 11 at 8PM ET/PT on ABC and be followed by a live The Bachelor: After the Final Rose special at 10PM ET/PT.