Sienna Miller 02.8Sienna MillerSienna Miller must be mad about the boy.

Rhys Ifans that is.

The actress is said to be so smitten with her rugged boyf...

She reportedly exchanged 53 texts with him in the space of eight hours.

Yup, Sienna was surely out to break some kind of record with her loved-up text mania - apparently spurred on by the fact that she's hugely homesick for Rhys while shooting her new movie, GI Joe, in Los Angeles.Sienna Miller Rhys Ifans 2.08Sienna and Rhys Ifans

"Sienna is missing Rhys massively and they have stayed in constant contact," a friend of Si's told the Daily Mirror.

"She boasted that they have sent each other 53 texts in the space of eight hours. Everyone's been saying she must have had smoke coming out of her mobile."

The insider added: "Sienna's started trying to use alternate hands to give her thumbs a bit of a break."

That's love for you.