This might help, it helped me.
'How does no contact affect your ex?
If it IS going to affect your ex, it will start to happen after about 6–10 weeks of the breakup and can take up to 4 months for anything to happen - it’s a long game, so if you are following no contact, which I strongly recommend you do, you have to be patient and explore the main purpose of it, which is to focus on you, your recovery and moving forward.
The first few weeks your ex will be relieved to have broken up with you and be enjoying their freedom. These are particular difficult times for the person who was broken up with, but is absolutely vital that no contact is attempted here because it is particularly not welcome.
After about 6 -8 weeks your ex will start to notice that you have not been lighting up their phone with messages and pleas for them to come back and they will start to get curious about why. Curiosity is good. If they have blocked you they might unblock you to give you a chance to reassure them that you’re still interested (don’t do that), or they might start looking you up on social media. Again, if you satisfy this curiosity now, by contacting them, they just get the ego-stroke of knowing you’ve not gone anywhere and you are back to where you were at day one.
After about 3 months, they may have realised that the grass isn’t necessarily as green as they thought it would be, they start to have doubts about the break up particularly if they can see you out and about, happy and well and enjoying your life. This is the time you might start to get ‘I miss you texts’ or even angry messages saying you never really loved them - they may block you again, trying to see if you’ve noticed and trying to get you to respond. Again, don’t. The power and control is switching here. You are enjoying your life and your ex is now questioning their decision and asking the questions you asked when you first broke up - can it be fixed; is it worth another try?
Until sometime in the fourth month after the breakup they realise you are NEVER going to contact them and so they contact you. If this happens you need to play it cool. Not too eager and not prepared to have any discussions by text. Wait until they are asking you specifically to meet up and even then….. play it cool and say you’re interested in hearing what they’ve got to say and that you’ll be free (give them a time sometime in the next 5–7 days).
Of course, NONE of this may happen to your ex. They may break up with you, move on and never contact you again. The great thing is that you will have been working on yourself and your life while all this is happening so that, if it doesn’t, you’re well on your way to being okay. I coach a lot of people who start no contact hoping to get back with an ex only to find that even when the ex comes back, they don’t actually want them any more.
And the timescales are only a guide. Four months is significant in my experience as a coach. Something is happening even if you can’t see or feel it right away.'