Blake Lively is opening up about balancing her personal and professional life. While chatting with ET's Rachel Smith about her upcoming film, 'It Ends With Us,' the actress admits she feels 'guilty' trying to balance the responsibilities of being a working mom. Plus, Jenny Slate, who co-stars with Blake in the thriller, gushes over working together. Jenny says she 'fell in love' with Blake and calls her a 'deeply trustworthy' person. 'It Ends With Us' hits theaters on Aug. 9. Source