Tom Hiddleston's 'commitment phobia' behind HiddleRift?

Actor Tom Hiddleston called it quits with singer Taylor Swift after a whirlwind romance apparently because he cannot stay in a relationship for long.

Friends of the Thor star have claimed Hiddleston broke up with Swift because he is a "commitment-phobe who gets bored easily," reported Aceshowbiz.

"Tom is a commitment-phobe who gets bored easily. Even his sisters affectionately chide him on his lack of relationship staying power," a source said.

The 26-year-old singer isn't letting the claims bother her and is treating it all as "water under the bridge".

"Taylor knows what went on with Tom and won't be affected by his team's claims. It's all water under the bridge as she's concerned," an insider said.