I can totally understand how your feeling. My X and I don't communicate at all. My S was visiting before college starts these past 2 weeks and my D lives with me (she is disabled from a car accident now 22). I live in FL and S and X live in OH, although OW lives in MN. Go figure.
Someone who I shared just everything about our lives together is completely gone. He shares it all with OW now. And he still will text or call to update kids on his "wonderfully new happy life!" Even sending pictures of his recent fishing trip (w OW of course). BTW he spends probably 6 days a year with his kids. His choice. Be the better Dad and continue being there for your kids.
I hate that I don't have anyone now either who I always thought cared about me. It's strange to go from him being my husband to now being nothing...dead actually.
This place has been great to help me detatch. After I have a bad day or feeling axiety I come here to just read. Read and learn and know that you're ok.
M: 49 H: 49 S23 D24 (disabled from car accident 6 yrs ago) M: 21yrs BD: 1 month after D home from hospital (after 6 months) D: 3/11/11 Moved: 10/11/11 to FL for SCI recovery X: engaged w/OW