My Mom went to some Mensa meetings in Boston. Ummmm... you might want to e-mail her for her input. She said they were the oddest bunch of people she had ever met.
alt.religion.kibology was nearly torn apart a bunch of years ago ('92?)when some trolling in rec.org.mensa got out of hand and alienated a lot of members of both groups. However, if the newsgroup is representative of the organization, I'd have to say that Kibologists are far less arrogant than Mensans.
best advice from someone whose been there done that twice... don't do anything or go anywhere with someone new for a long while. give yourself time to heal and time to discover who you are when not in a relationship. the old addage of the best way to heal a broken heart is with a new love is the worst case scenario for making a HUGE mistake! for the record... i share your views on commitments. somehow, it just should mean the same thing to all people, and yet, it is interpreted in too damn many ways to suit the whimsy of circumstances. take care.