Britney Spears' recent split from fiance Jason Trawick wasn't wholly unexpected -- and now reports indicate that for months before, they were indeed headed for Splitsville (population: them) because he just grew tired of having such an emotionally delicate flower for a girlfriend.

“It has really been in motion awhile. Jason has been very stressed and concerned for Britney and what she might do if he left,” a source claims.

“He is worried about her and really loved her, but it started to take a real toll on him," the tattletale continued. "The burden of taking care instead of a partnership where she also takes care.”

Basically, rather than a mutually strong relationship, Spears needed a lot of babysitting -- and despite her fully-stocked fridge, Trawick finally had enough.

So what this means is that Spears was too crazy for Jason but not crazy enough for Simon Cowell. Damn. Girl just can't win for losing.

Britney and Jason confirmed their split on Jan. 11, after which she returned her engagement ring to him. Trawick, meanwhile, will most likely fade into obscurity.

Tell Kevin Federline we said hi, bro.