I cant remember which thread it was in but someone explained it reasonably well, but I forgot.

So a soft-next is when you don't initiate contact, the only time you do have contact is when they contact you either by message/phone call and/or a random run in with them.

My question is, how do you act in these situations? If they message you do you message back? Do you act friendly/indifferent? Or do you just ignore them?