Renee Zellweger is desperate to start a family with her guitarist boyfriend Doyle Bramhall II, as she wants to adopt a baby, according to reports.A source has said that the 44-year-old actress has molded her career in recent months to allow herself more time to focus on her personal life, Radar Online reported. The insider said that she has been directing and working on her own projects, which has given her more time and flexibility to develop her relationship with the right guy. The source said that the ‘Bridget Jones’ Diary’ star is a true romantic, and she didn’t want to be a single mom, but wanted a partner with whom she can share the adventure of parenthood.