When is the right time to move on?

Long story short, i was dating this guy for about nine months, i lost my virginity to him and i really did think it was forever (which sounds stupid but it just felt so right). We broke up about two months *kinda* and we're friends now, but he's flirting with other girls left and right even though he still tells me he loves. So, I'm very confused on whether is it time to move on or not. Plzzz help