My friend hates his girlfriend and I am tired of hearing about it.

So I've this childhood school friend who got in a relationship with this sweet girl 4 years ago. She was his junior and initially he used to go on and on about how lovely she is. Me and our common friends used to be very happy for him because he seemed to love her sm.

Slowly he started nitpicking about her habits that he dislikes, it'd always seem silly to me like hair everywhere whenever she visits, she doesn't clean up after cooking something and she is too childish etc etc.

Despite being his junior, they're of the same age actually.

He started undermining her professionally too like, she is too naive and the job market is so brutal and she doesn't work hard enough etc etc.

I was single at that time but I did realise how problematic he was so I'd always advise him to talk to he gently and explain why certain things are important for him but he'd just say that she pretends to understand but repeats the same thing again.

The thing is, she is sweet and I like her a lott. I think she trusts him too much for her own good, she should be more independent and have a life aside from him because this guy constantly bickers about her behind her back and whenever I get angry at him to just leave her, he says things like, '"oh but she is so sweet, she loves me sm... and we've been together for so long" and he also says that she'd be too heartbroken over the breakup but c'mon she is a lovely girl and I am sure she'd easily find someone who loves her for who she is instead of nitpicking silly things about her.

I recently got into a relationship too and sometimes I am scared that my boyfriend might one day turn into this person instead of just confronting me about whatever he dislikes about me. I hate talking to this friend about his girlfriend but he somehow manages to always bring it up.

He also met up with some new people last year and clicked well with this random girl and he'd constantly compate his gf with this girl, ugh it was so annoying. I warned him that if he was cheating on her then I'd just tell his gf but he kept saying how they were just friends who talked everyday -.- and the girl knew about his gf so not a problem apparently.

All this makes me so angry and I've told him repeatedly how he is morally wrong and I've discussed this with our common friend too who just said that apparently being a friend means you sometimes have to lend a ear to your friend about his wrongdoings -.-