Not being able to move on

So I broke up with my boyfriend of 3 years last year we have a six month baby , after I had the baby we got really close and started hooking up I thought my feelings were gone for him , but they’re actually a lot stronger. I have tried to move on and start talking to other guys but it’s so hard. They’re seven a guy rn who will marry me and buy me house rn my family likes him but my heart isn’t in it . I honestly don’t want to move on from him and he told me he doesn’t want me to move on but the timing rn isn’t right . He doesn’t have a job at the moment and I need to finish school he wants to be the best for me .