Taylor Swift

Double dates are fun, but one-on-one is where the sparks can really fly!

Taylor Swift and Tom Hiddleston might know a little something about this. Last night, the new couple went on a romantic dinner date to Ruth's Chris Steakhouse in downtown Nashville, and E! News has exclusive photos and details from their "intimate" night out.

Taylor, 26, and Tom, 35, "seemed very comfortable with each other," says an onlooker. Unlike the previous night of dancing at Selena Gomez's concert alongside Taylor's longtime BFF Abigail and her boyfriend, Wednesday night "was an intimate solo dinner date."

The singer and Thor star were seated in a small area off to one side of the main restaurant which seemed to be more private than the general dining area. Taylor and Tom "were by themselves on the date, but surrounded by security," says an onlooker.

Tom Hiddleston

At the end of the evening, The lovebirds walked out of Ruth's Chris holding hands. And, like a complete gentleman, Tom opened the car door for Taylor and made sure she got into the vehicle safely. From there, they were driven away by security.

It's all sounding like a celebrity fairytale, isn't it? Well, a source tells E! News Taylor was hesitant to get involved so quickly" with someone after her Calvin Harris breakup. But with Tom, "there was an immediate attraction." Taylor "is not on rebound mode," notes a source, "even though Tom questioned it a little when they first started talking."

Clearly, both parties involved seem to have overcome any initial reservations about this budding romance. "Tom wants to be with Taylor," a source tells E! News, saying the new couple is "already very attached" and "text all the time."

One source tells E! News Taylor already thinks Tom could possibly be "the one, as odd as new as it sounds."