Isn't this wrong?

Make sure that he’s actually f*ing other girls before telling her. otherwise you’ll ruin what they have. if he is, make sure you go about telling her gently.

I agree with the above first do mke sure that these alligations are true if they are, yes wht he doing is wrong wether shes in the hospital or not if hes sleeping with other girls hes still chetng on her and is being very disrespectful if ts true, he doesnt deserve her but im not sure if telling her now while shes in hospital would be the best time if you do choose to tell her while shes in there try to be encouraging, and say tha hes nt worth t, shell find soemone better, maybe bring her some flowers/chocolates/ice cream, ect something to cheer her up

I think if he has had the will to cheat on her before, then he obviously might be able to do it again.

and if you guys suspect he is doing it again, and can actually back it up with evidence, then you should confront your cousin about it.

cause to tell you the truth, this young couple is about to make a mistake if they get married. they are bound to get divorced like many other couples.

save her the time and pain of it happening later in the future. do it after she recovers though.

you might be able to tell your cousin first though. so maybe he has the guts to tell her himself.

but if you do care about this girl. and your cousin does confess, and tries to still stay with her, make sure you make it clear to your cousins fiance, that staying together is a mistake, and that she should find someone better than your cousin.

if you really care about her