Setback

How strange this is, I have been feeling great for a long time, and posted just yesterday how I was able to feel attraction to another man, and the joy of feeling something again. Then, just out of the blue, a major setback, I have been fighting myself all day to NOT just look at his Facebook. I have not blocked it since I have not felt any urge whatsoever to look at it. And I know since before that he has been using FB for hoovers,
either he was imitating what I posted, or pity partied, all in public since we are not FB-friends, I luckily never accepted how request. But, now I just have to sit at my hands. I feel like my own process has become the roller coaster the so called relationship with my ex-narc was. I decided to come here instead because after several months I do not want to set myself back by FB.
Anyone who recognize this? I feel almost ashamed over being even tempted to have any form of contact with him, I don´t want him anymore, why do I set myself back???