To love someone is not haram, but ,if it is only a feeling without any action.
Generally it is a shytan 's whispers and it passes. Because shaytan 's whispers are week.
Zina is haram , disturbing a couple and making them disconnected is haram.
Mariage is important.
But if things are improving like that without his hands, my opinion is to pray and ask Allah not to the slaves.
Because Allah guides ,
he can pray like that , Allah if this situation is good for me in your knowledge, pls make it easy to me. but if this situation is not good for me and it is a test from you , if it is a shaytan's whispers , pls make me correct my feelings and make me free of this love.... etc.
I wish Allah helps to all the couples who have problems.
amiiiiiiiiiiiiiiiiiiin amin amin