Looks like we'll soon be hearing wedding bells for Taylor Swift and Tom Hiddleston!

A source exclusively tells In Touch that after just weeks of dating (and seemingly non-stop PDA), the singer and British actor are already talking marriage.

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"They barely know one another, but Taylor is determined to marry Tom," says the source. "[She] has already declared her undying love to him. He told her he feels the same way."

In just four weeks, the pair has already done so much. After being spotted making out in Rhode Island, the pair showed major PDA while at a Selena Gomez concert, and they recently jet-setted to Italy for a romantic getaway. On top of that, their parents gave the relationship a seal of approval!

taylor swift and tom hiddleston
Splash News

The singer wants her wedding to look as if it's straight out of a fairytale, and would love to say "I Do" in an English castle. According to the source, a Hiddleswift wedding may go down sooner than we think.

"It may come as soon as her birth month, December," says the source. "She loves the idea of a winter wedding and is considering setting a date for later this year."

For more on this story, pick up the latest issue of In Touch, on newsstands now!

in touch cover - jen and angie