Change is hard. Fast change is even harder

I'm divorced. Have been for one year this month. It hasn't been easy of course. So how about this weekend when my ex-wife drops this one on me: she's moving in with her boyfriend into a house she's buying. I've never met this individual and at this point not sure I want to, but I'm concerned for her. Divorce is not easy for anyone, not a huge surprise, but I suspect she's moving forward with this relationship not solely because she really cares for this person but for a need to be in a relationship period and a need to feel that things are "progressing". You see, we're both in our early 30's and have no children together. I feel the pressure is on her to bear children or be in a "serious" relationship. She claims she really likes this person and honestly I don't doubt it. I just think exactly 1 year after getting a divorce, one isn't ready to move back in to another serious relationship. And moving in is about as serious as it gets. But perhaps that also speaks to my immaturity, that I've been wallowing in the past and unable to get a date while she is moving in with someone she deeply cares about. So I'm not sure how to feel. I congratulate her for it while being concerned at the same time. I also felt hurt that in her exuberance over the situation she inadvertently hurt me by saying positive things he was providing for her that I could not. I wish them nothing but the best though, if he indeed can love her better than I could great..all I want for her is to be happy