So I believe my girlfriend MIGHT be cheating. ( we've been together 4 years) More than sure she is seeing someone on the side the last few days I believe because she may have lost a little bit of attraction for me since we've been arguing very badly the last week. ( we got in an argument last night because she thinks I'm checking her phone to accuse her of something ) truth is I know what's going on because she told me she was with someone we both know after work and it turns out that was not true. I ended up speaking with this person because I ran into them but she doesn't know that.

So we live together with her mom and I want to start the no contact rule. She actually has decided that she going to be moving to her dads and I'm going to be going to my moms so we can save more money on rent and "get a apartment/house at the end of the year" ( don't know if that's a cop out for her to potentially leave or not) we talked about it. ( this was after we made up )

I want to have her curious and raise her attraction back through no contact so I can do what I need to do to fully win her over. ( I haven't been 100% focused on my relationship recently because I've been focusing on a business. )

How do you do no contact when you live with someone?? We are not fighting right now and semi- made up. ( had sex too) but something's still a bit off and I can tell.

Sometimes I go to my moms house to visit. ( VERY rarely though) last time we had a fall out that's where I was. Should I stay and do the no contact rule and just be very busy and netrual/aloof or should I go to my moms and tell her we would have a break? Or lastly, should I make something up about helping my mom for a few days and be busy over there and use the no contact. How do I go about this? This is the second time I've been in this situation ( without the cheating ) and hopefully the last. I've been reading a lot on how to maintain healthy long term relationships. Thanks guys.