I'm so sorry for your pain

((((HUGS))))
I would say back off and give him a chance to miss you. If he gets all the comforts of you telling him how much you love him, he might not realise what he's going to be losing out on. That doesn't mean you should be cold or unloving. Just back off on expressing how much you love, miss, need, etc.
Don't put your life on hold either. If you feel like getting out of the house, go.
You said you know you have some faults (nagging). You do need to express that you are willing to be more easy going, if you mean it. Tell him what you are willing to change, then let him think it through.