Justin Timberlake is using Britney Spears’ fragile emotional state as an excuse to postpone an engagement to his girlfriend Jessica Biel. Justin Timberlake/Jessica Biel nuptials would drive Britney Spears off the edge, the SexyBack singer claims.

“I have a heart…I can’t do this to Britney right now,” Justin has said according to a report in The National Enquirer. “We simply can’t get engaged-I don’t want to do anything to cause Britney further pain right now.”