Walking away...

So yesterday I confirmed my boyfriend of 2 years, baby daddy, whatever you wanna call him... was cheating on me with this his sisters friend... who lives with them. I noticed the signs they were sneaking around for a while and today I snapped when I confronted him again because I noticed too many things today. And you know what he told me? I said I was gonna beat her ass and he told me to “leave her alone”. When I’m telling you I beat this girl up when he left for work... I’m 12 weeks pregnant with his second biological child, he takes care of my first born daughter like his own... I’ve never felt more alone right now and I could use some advice 🥺