He Flipped like a Light Switch

How can I even try to trust this man now? He’s gone from being a SERIAL cheater, pathological liar, and embarrassing me countless times (one being entertaining his first bm..someone i have to deal with for a while who now has the satisfaction of knowing he hasn’t been faithful to me), being disrespectful when he’s upset to a COMPLETELY different man now after developing a bond with our daughter(his first daughter, overall second child) ? He still has some areas of improvement..However this change was literally like night and day, overnight. All the sneaky stuff he used to do is the complete opposite now..use to keep his phone on silent, now his ringer is always on..had his first bm on mute, now she isn’t, has given me his phone passcode and his location, and he’s now dang near a more active parent than I 😅..he does a lot of research and tries to make changes to help her development from the smallest things to transitioning her to new shows with less harmful lighting and calmer backgrounds..to researching what to use for her skin, reading reviews and ordering her some product making sure I keep up with it..I didn’t even know he ordered it meaning he genuinely wanted to ..it’s not just for show.. he also seems dang near more excited than me when she does something new..called me last night while I was out going crazy(in a good way) cause our daughter said « bye bye monkey » whilst watching Ms. Rachel and kept replaying it so she could say it over and over He says all these changes are for him to show me he’s done with all that stupid bs from the past and now that having a daughter..seeing how much she is learning and growing..he just wants us to be a happy family. My paranoia just has me believing he’s just better at hiding his dirt now every time I check his phone and find absolutely nothing. It’s like if someone lies to you 100 times, you’re gonna expect them to lie 101 right? I don’t know if I can accept it..I’m scared it’s all a sick fake game. My stepdad told me a Baby shouldn’t, and a lot of times won’t change a man, however sometimes unfortunately that’s what it takes. I just still feel like I dont believe anything he tells me..however his actions have been consistent for some time now.. I really want to just leave out of fear that he’s just a master actor and using me as a placeholder ..but if it is real then I may be making the wrong decision by leaving.. that’s what I feel in my heart He has literally became the « potential » people always tell you not to sit and wait around for. I’m too scared to trust it but I want to so badly ..I keep trynna find reasons and excuses to leave as in taking his smallest mess ups and lack of romance using it to convince myself he’s still the same and doesn’t love me genuinely (messups as in not getting off the game right after he said he would or him getting the slightest attitude with me during a disagreement) and it’s like he tries even harder..so it has to be real right? I really wish he understood how poor my mental is when it comes to me feeling like the world is a bad, loveless place and that this could end very terribly if I find out he’s still cheating and lying to me underneath all of this😔💔 I can literally now bring up an issue to him, he says ok..then he fixes it no problem or he’ll correct himself and apologize if he slips up such as replying « what » to me or something I do not like (but ofcourse I think it’s all just mind games) but who would take it this far just to play around, the world is so cruel I’ve stopped doing a lot of the things I used to do for him simply because I’m scared to trust him and look stupid ..however he says all of that stuff was a plus to him anyway and that he just wants me for him..anything I do for him is extra THE FAWK IS GOING ON HERE I know yaw can’t live my life for me but WHAT SHOULD I DO WHAT SHOULD I THINK??! 🆘 I broke up wit him yesterday..and he was like okay I’ll sleep on the couch..then took us out to eat and held me all night in our bed as if nothing happen(which of course I used as an excuse to convince myself that’s his way of manipulating me) whole time that’s probably just his way of handling me. I DONT FREAKING KNOW. The only thing I have on him now is his lack of romance ..I want random flowers and acts of love, surprises ..but he’s nonchalant (I’ve convinced myself that there’s no such thing as a man whom isn’t romantic when he’s with the person he ACTUALLY wants) Ofc he said he’ll do more now that I’ve voiced my desires but I feel like when it’s real(and not someone you’re just using as a placeholder) that the romance comes NATURALLY so of course I try to use that to tell myself « that’s how I know all of this is fake » I don’t know if I wana give this a chance or just run away and start fresh with someone new once I’m ready.