Universe has its mysterious ways of working things out LJ. 

I know it could be really difficult for you to imagine your POI with another man.. But have you ever thought that Her-moving-in-with-the-other-man could actually draw her closer to you ?? May be her moving in with another guy is the only way that she moves away from him mentally, emotionally and spiritually.
By living with him she will realise that this is not what her heart wants.. She will realise that he is not "The one " for her. All that you can do is give her unconditional love and pw or bwd. 

Remember the guy she is with is not that important.. He is making your manifestation come true.. 
You have to respect the choices that she makes ( even if its about moving in with someone else ) because what you give out will magnify and come back to you. 

Keep Faith and Stay happy all the time because you know that she's yours.. You can try Rubbing Out technique.  

It's funny. This morning I asked the universe to bring me a sign. Any sign at all, if I Should continue or give it all up.
And then I get your answers in here, and the first post I see when I open my IG Today says

"do you trust me, when my answer is wait? -God"

Thank you for your answers. I have never thought about it that way.

Hello thank you Collie for sharing your story, me too, I am in the same situation. I know deep down inside, my mind and my heart knows that my man is mine no matter what the circumstance is. Lj I know how you feel, I always keep telling myself that I will rise above the situation and continue with the technique and further improve myself and to keep my vibrations up.
I have learned so much in this journey, I learned to be patient, which I can use when we are together, I learned to be stronger, which I can use when we face challenge, and I become more confident and secure that I no longer cry and feel sad whenever I hear something about the other.
My situation is quite similar, he is my best friend, people thought we are together romantically, but then he met someone from a dating site. I was doomed, but I kept my head high and carried on with being friends with him because we work together. I swallowed my pride, I didn't care what other people say, I know that we are meant to be together and I've never been so sure in my life. This lead me to Lanie's techniques which I am so thankful that I have found it.
I meant no harm to anyone, so my visualisation is that he is with me, happier than ever. I don't include the other one so as not to give it strength. I used the technique I've read from Paul Mc Kenna to prevent jealousy, if you picture them together, just like a film, increase the lighting/saturation until you don't see them anymore, it worked for me. And the rubbing out technique from Agnes also works like magic.
In my visualisation, he also tells me that I am the only woman for him, I made him a better person, I go to the end result. So, whatever happens now doesn't matter because that will be the past.
I will surely share my story and I know that I will inspire a lot of women not to give up amd keep loving yourself, keep improving, rise above everything, and we will get the desires of our heart.