The One Direction heartthrob is completely smitten with the Love Story singer and friends believe the pair are even considering marriage, even though they only recently started dating.
A source told Us Weekly: "This [relationship] has gone from zero to 60 in seconds.
"Harry is totally in love. I can see them getting married in a week, just going for it."
Things are so serious between the couple that Taylor, 23, recently visited 18-year-old Harry's mother Anne in Cheshire, North West England, and is reportedly planning to buy a country retreat there.
A source previously said: "Harry and Taylor are crazy about each other. They just got back to LA together, after sharing a week-long vacation in England.
