Dr. Drew: Taylor Swift's Got A Serious Addiction To Love

Taylor Swift's in love with being in love and it could be the reason she's seemingly head over heels for Tom Hiddleston ... so says Dr. Drew.

The celeb doc is set to appear on this week's episode of "Allegedly" with Matt Weiss and Theo Von and gives the scoop on how he feels about Taylor's man hopping. Drew's pretty open ... saying he thinks Swift falls deep, hard and fast for the guys she dates.

Take a listen to his diagnosis and be sure to download the full podcast here when it's released Tuesday.