My partner and I have been together for 7 years and for the last 4 he has been on 20mg of Paxil for social anxiety. He has changed completely and Never wants to be around me or our children. He is tapering off now as a few weeks ago I found out he has been going on dating sites as well as texting an older woman inappropriate messages. I don't know whether I can trust him anymore. We used to be best friends and was even engaged (I called off the engagement). While I am upset and need to talk things through, he is withdrawing and is agitated. Is this behaviour normal? I was 100% secure in my relationship up until recently.