I [28F] fell out of love with my partner [31M] of 8 years.

I’m really unsure of what to do, we have a lovely little boy together who’s 22 months old and we both think the world of him, I’ll start with the positives with my partner:
– He’s a great dad, looks after our boy, plays with him etc.
– He’s always been very kind to me in the sense of he’ll make me food, go food shopping on days I’m unable too/or unwell, he’ll look after me when I’m sick, if I want to go somewhere- he’ll happily take me (there is a big however to this).

However, this is everything that has built up to me feeling the way I do.

Over the past few years, he’s broke my trust a lot and made me feel really really crap about myself.
– He used to lust over women on the Internet (he assures me he doesn’t now, but I’m unsure) and lied about it multiple times (even though I had evidence).
– 2 days after I’d had my little boy, I was at home recovering from a C-Section and could barely move off the sofa, our baby started crying and I was struggling to get off the sofa go get to him, I shouted my partner, texted, rang him (he was only upstairs using the bathroom) – later found out that he’d been mastrubating and just ignored me.
– He’s constantly telling white lies, which I know aren’t a massive deal, but I’d rather him just be honest.
– He doesn’t pay attention to his self care and I feel like I’m constantly having to remind him to book haircuts, shower, brush teeth etc
– If I ask should we go out and spend the day together he’ll he up for it, but if there’s something he’d rather be doing such as watching racing, rugby etc, he’ll rush us around during our day out and have a face on him all day.
– He’s very lazy when it comes to housework and just leaves everything lying around, never does any washing unless I ask about 3 times (usually if I’ve been in a rush and forgot myself).
– He never helps out with any DIY around the house and everything is just left to me.
– He never pays for anything for our little boy, he’s only bought 1 pack of nappies since he’s been born.
– Never plans anything with us, but will happily plan things with his mates.
– Speaks ill of my family quite a lot, which they’re not perfect, but who is?
– Our sex life is non existent (this is partially a me problem too as I just don’t look at him the same way anymore)
– We got engaged in July 2023, I mentioned about starting wedding planning at the start of this year (before i started feeling the way i do) so we have enough time to save up, he just shut me down and went “we can’t afford it”, but then goes and books himself multiple expensive tattoos?

I could go on, and I feel so so bad for slandering him behind his back (although I’ve said all this to his face), I do feel like I’m nagging just to get the absolute basics out of him, and that’s not like me to nag what so ever, I’m very easy going usually. However, I’m working part time, I’m a masters student studying a healthcare course which is VERY intense and trying to be the best mum/ partner I can be, whilst keeping my head afloat. I look at him and just feel nothing, I feel like a fraud sleeping next to him every night, I’m not sexually attracted to him anymore, we’re not effectionate and I feel the only reason I’ve not parted ways is for my sons sake. I feel so drained and as if everything is down to me, I just feel so done.

TL;DR: I have fell out if love with my partner, he’s consistently broke my trust and feels more of a burden than a help with our son. I no longer feel attracted to him and there’s no intimate or affection in this relationship.