Over the past few weeks, Jay has been caught up in a love triangle between Lola and on-off girlfriend Abi Branning.
Speaking to the Daily Star, Borthwick outlined his belief that Jay may prefer "fun" Lola over "posh" Abi in the long-term.
"If he had to pick I think it would be Lola, even with the baggage. She's fun, whereas Abi is a bit posh," the actor speculated.
Commenting on the storyline, Borthwick added: "Jay didn't have any women for ages and now two have come along at once! It's like buses!
"It's so hard to act with these two beautiful girls all the time. It's a tough job, but someone's got to do it."
When Abi returned to Albert Square in late August, Jay had already grown close to Lola as he helped her support baby Lexi.