im worthless

my SO has been divorced 2x, they both left him. he also had multiple sex partners, he was like a promiscious. i accepted all of it. hes my 1st bf, 1st kiss, lost virgin to him, etc. weve been married for 3yrs now, he says to me that hes like a diamond, i should value him. but as for me, im just like a rock. he acts like i have baggage, been w plenty of guys, he accused that all my guy friends are fwb. he makes me feel really worthless and see no value in me. he also says that it was a mistake to marry me cause i lack too much knowledge. but hes never given me the chance to go out and explore. all i do is stay home w the kids.