Been in a relationship with m31 for over 10 years I’m F28 and we took a break for almost 4 months. Need some advice on women who have experienced something similar.

for context we were on a 4 month break Ill admit I did go on tinder and bumble a couple of times but It just felt wrong so I kept deleting it. I then made a snapchat and mostly just hung out with friends we do have a baby and another one on the way. Here is what I found out what he did while we were on break and still continued to do so while we were together first and foremost he still to this day has a Face ID lock on his Snapchat and he claims he does it on a lot of apps. I don’t really ask to look at his phone but recently I’ve been eager to. a month or so ago I got a snap from a long time friend who is single and was on tinder and said she’s saw my man on there with a selfie and sent the screenshot of it and it said “recently active” I confronted him and he lied to me saying he didn’t know he still had that and I know it was a lie because I know recently active means he was on it super recent mind you we have been back together 6 months before I caught him on there. he’s been watching strip chat frequently and on top of all this one of my cousins who also was my bestie/cousin is a male reached out to me saying he was talking to my man on a weird number which I suspected was a texting app because I noticed he has one of those But he said he met him on GRINDR years before this I caught him talking to one of my other close friends who is also is the closet but I found out he’s his friend on snapchat! He also has telegram and TikTok(secretly) and discord so I guess just what I’m trying to say is how did other women in situations like mine leave? I feel so stuck, especially pregnant with our second child. I know I need to leave but I just need the strength this is my first post ever in Reddit. take it easy on me, I do have abandonment issues that I’m still dealing with from when I was a kid. I know the right thing to do Is leave it’s just so hard.