You can stop them when using the first described case, just do not pay attention to these "well-wishers", they do not sincerely wish you good, but from what they see at work and have nothing to do, how to discuss your personal life. Completely ignoring conversations that you do not like is real art, so try to just temporarily close your gentle ears from these dirty gossip, which, as a rule, have nothing to do with the true situation. So you just have to be above these gossips and do your own work, and your personal life outside the workplace. Then they will have nothing to discuss. And if it does not work out that way, just smile sweetly at the advisers and go away from them, referring to the employment. Women's team, if they do not see the development of relations, calm down, they are like a volcano, if they are not heated from below, then lava will not spill out. And if they give only a little sparkle, they will gossip around the clock around you. In no case can you take a defensive stance, curse with them, stop all communication, this is not a way out, they will get it even more and they will begin to discuss how you became nervous.
Stop the gossip about your love story at work, of course, and your young man. standing up for your relationship. Because he also got sick of hearing each time from you, how annoying your person these colleagues at work. This again is not an option, these wicked men just conclude it, but they can also talk about you who knows what. Best of all, do not tell your young man anything about this, you have to deal with the situation, the more you are also a woman and you can better understand how to stop your advisers.
The best option for all of them is to translate their curiosity and "sincere" desire to help someone. They just want to benefit all lovers. They have so much experience, and they do not know where to give it, to whom to give. So just need to find another victim for their gossip, from the same team that recently you so pestered. You say, it's not ethical, maybe, but there's no other way out. Let one of them feel that such a general review, when you come and work. and they look at you like an x-ray pervade. What's your mood? how do you look like? God forbid they will notice, the bags under the eyes, will be cute grinning, and at lunch you will be harassed by rumors, about your supposedly crazy night. So think about where to translate their obsessive guardianship over you, choose the victim and act. And she will calmly continue her love story, already far from gossip and women's collective.