My baby's dad wants to sleep with my friend?

I am not with the father of my child but from last year he has openly said how he likes my friend and wants to sleep with her. This is the last straw for me it is obvious he does not care about my feelings i give him her number and he phoned her saying how he cant help how he feels begging her to see him and saying she should stop being my friend would that work? He also told me that it could of easily been her who was his bbys mother and how im the reason he hasnt been able to sleep with her. She told him it wouldnt happen and shes not interested. Now i dnt know what to do about making him see my child, as you can imagine i am quite embared and ashamed as it is, do you think its still wise to talk to him about when he wants to see his child or is it best i dont. Surprisingly i thought i would be crying but i havent ive been strong, im jus scared that he will have lowered my self esteem and caused insecurity, ive stopped caring about him a long time ago but now when i talked to him i was emotionless, im confused i dnt know what to d