Should I finally walk away?

Before my SO and I moved in together i discovered his Twitter account that he wouldn't let me see. He had been flirting with other women for the entire length of our 1 year relationship. Idiot me forgave him and moved in...4 months pregnant with his child. Had another issue with him still following the women he flirted with and some webcam/model/porn star accounts. He swore they meant nothing to him and unfollowed them. I should add i have his password and I know he hasn't flirted with women anymore. Today I looked through his follows and found an account of a webcam/porn star with obviously a ton of sexual stuff on her feed. Also found another account posting pictures of naked women. Apparently he has zero respect for me and thinks I'm stupid and may be wouldn't notice? 😡 I feel like it's time to call it quits. I don't understand the to need to follow or look at other women if your SO is enough for you. Am I wrong?v