Rihanna feels ''more confident and secure'' with Chris Brown in her life.

The 'Diamonds' singer recently rekindled her romance with the rapper - even though he is still on probation for beating her up in 2009 - and friends say Rihanna is happier and more focused on her work since they got back together.

A source told HollywoodLife.com: ''I know it's a lot easier for her to concentrate and work hard now that Chris is back in her life.

''She don't worry about the bulls**t no more. She don't wonder about what he's doing or who he's with. It's like she feels more secure and confident when he's in her life.''

While Rihanna is serious about her new album, she can't resist taking breaks from her late night studio sessions to send him steamy photos.

A source said: ''[Recently] she took a break between laying down some vocals and hit Chris up for about 30 minutes.

''She went in a booth and talked to him and was taking pics of herself on her Instagram and sending them to him.

''She was in the booth just laid back on the chaise and chatting him up. She was smiling and s**t and had this warm glow on her face. Whatever he was saying to her made her feel like a queen.''